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TABLE OF CONTENTS OVERVIEW Mini Tower Computer (MT) View Desktop Computer (DT) View Small Form Factor Computer (SFF) View Ultra Small Form Factor Computer (USFF) View MARKETING SYSTEM CONFIGURATIONS Operating System, Chipset Processor Memory Drives and Removable Storage, System Expansion Slots Graphics/Video ...
TABLE OF CONTENTS OVERVIEW Mini Tower Computer (MT) View Desktop Computer (DT) View Small Form Factor Computer (SFF) View Ultra Small Form Factor Computer (USFF) View MARKETING SYSTEM CONFIGURATIONS Operating System, Chipset Processor Memory Drives and Removable Storage, System Expansion Slots Graphics/Video ...
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DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 SMALL FORM FACTOR COMPUTER (SFF) VIEW FRONT VIEW 1 Optical Drive 2 Optical Drive Eject Button 5 Microphone Connector 6 Headphone Connector 3 Power Button, Power Light 4 USB 2.0 Connectors (4) 7 Diagnostic Lights (4) 8 Drive Activity Light BACK ...
DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 SMALL FORM FACTOR COMPUTER (SFF) VIEW FRONT VIEW 1 Optical Drive 2 Optical Drive Eject Button 5 Microphone Connector 6 Headphone Connector 3 Power Button, Power Light 4 USB 2.0 Connectors (4) 7 Diagnostic Lights (4) 8 Drive Activity Light BACK ...
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V 1.6 SMALL FORM FACTOR COMPUTER (SFF) VIEW Number Name Number Name 1 P1 power connector(POWER) 12 LPC debug connector(LPC_DEBUG) 2 System fan connector(FAN_HDD) 13 Battery connector(BATTERY) 3 Internal speaker connector(...) 19 Memory connector(DIMM1) 9 SATA 0 connector(SATA0) 20 Memory connector(DIMM4) 10 Front IO connector(FRONTPANEL) 21 Memory connector(DIMM2) 11 Intrusion switch connector(INTRUDER) 8 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
V 1.6 SMALL FORM FACTOR COMPUTER (SFF) VIEW Number Name Number Name 1 P1 power connector(POWER) 12 LPC debug connector(LPC_DEBUG) 2 System fan connector(FAN_HDD) 13 Battery connector(BATTERY) 3 Internal speaker connector(...) 19 Memory connector(DIMM1) 9 SATA 0 connector(SATA0) 20 Memory connector(DIMM4) 10 Front IO connector(FRONTPANEL) 21 Memory connector(DIMM2) 11 Intrusion switch connector(INTRUDER) 8 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
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...DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - OPERATING SYSTEM Windows 7® operating system Windows Vista® operating system Windows XP® operating system Other OS Media Support CHIPSET Chipset Non-volatile memory on chipset BIOS Configuration SPI (Serial Peripheral Interface) TPM 1.2 Security Device (Trusted Platform Module)1 Non-TPM NIC EEPROM MT DT SFF... Ultimate SP2 (32 bit) Basic Driver support only via Dell.com FreeDOS for (N-series), Ubuntu® Linux version 10.10 (China only) Optional MT DT SFF USFF Intel Q65 Express Chipset 64Mbit (8MB) and 16Mbit(2MB...
...DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - OPERATING SYSTEM Windows 7® operating system Windows Vista® operating system Windows XP® operating system Other OS Media Support CHIPSET Chipset Non-volatile memory on chipset BIOS Configuration SPI (Serial Peripheral Interface) TPM 1.2 Security Device (Trusted Platform Module)1 Non-TPM NIC EEPROM MT DT SFF... Ultimate SP2 (32 bit) Basic Driver support only via Dell.com FreeDOS for (N-series), Ubuntu® Linux version 10.10 (China only) Optional MT DT SFF USFF Intel Q65 Express Chipset 64Mbit (8MB) and 16Mbit(2MB...
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This allows customers to change and may vary by locking in specific product configurations worldwide. MT DT SFF USFF Intel® Quad Core Processors Intel® Core™ i7 2600 / 3.40GHz, 8M, VT-x, VT-d, TXT (vPro™), 95W... purchase globally. They ensure the same platform is available for availability and synchronized transitions on a worldwide basis, thereby reducing their costs. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - The following GSP processors identified below will be made available to implement global IT standards by region/ country. NOTE: ...
This allows customers to change and may vary by locking in specific product configurations worldwide. MT DT SFF USFF Intel® Quad Core Processors Intel® Core™ i7 2600 / 3.40GHz, 8M, VT-x, VT-d, TXT (vPro™), 95W... purchase globally. They ensure the same platform is available for availability and synchronized transitions on a worldwide basis, thereby reducing their costs. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - The following GSP processors identified below will be made available to implement global IT standards by region/ country. NOTE: ...
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..., (1 DIMM) MT 4 Up to 4GB 1GB 16GB1 DT SFF 1333MHz 4 4 Up to 4GB Up to 4GB 1GB 16GB1 1GB 16GB1 USFF 2 Up to operate, but with a slight reduction in pairs of memory requires a 64-bit enabled processor and 64-bit operating system. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 MEMORY NOTE: Memory modules should...
..., (1 DIMM) MT 4 Up to 4GB 1GB 16GB1 DT SFF 1333MHz 4 4 Up to 4GB Up to 4GB 1GB 16GB1 1GB 16GB1 USFF 2 Up to operate, but with a slight reduction in pairs of memory requires a 64-bit enabled processor and 64-bit operating system. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 MEMORY NOTE: Memory modules should...
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DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 DRIVES AND REMOVABLE STORAGE MT Bays: 5.25-inch bay (External Optical) 2 Hard Drives Supported (Internal and External) 2 Optical Drives Supported 2 Interface: SATA 2.0 3 SATA 3.0 1 3.5" ... with and without FIPS Full DISK EnCRYPTION SATA HDD (available after May19, 2011) X 250GB1 SATA 7200 RPM HDD X 128GB1 SATA Solid State Drive HDD X DT SFF USFF 1 1 (slim-line) 1 (slim-line) 1 1 1 1 1 1 2 2 1 1 1 1 X X X X X X X X X X X X X X X X X X X X X X X 14...
DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 DRIVES AND REMOVABLE STORAGE MT Bays: 5.25-inch bay (External Optical) 2 Hard Drives Supported (Internal and External) 2 Optical Drives Supported 2 Interface: SATA 2.0 3 SATA 3.0 1 3.5" ... with and without FIPS Full DISK EnCRYPTION SATA HDD (available after May19, 2011) X 250GB1 SATA 7200 RPM HDD X 128GB1 SATA Solid State Drive HDD X DT SFF USFF 1 1 (slim-line) 1 (slim-line) 1 1 1 1 1 1 2 2 1 1 1 1 X X X X X X X X X X X X X X X X X X X X X X X 14...
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... x16 Slot: number of PCIe x16 (wired x4)Slot: number of PCIe x1 Slot: number of miniPCIe connector: number of Serial ATA (SATA) MT DT SFF USFF 1 1 1 1 1 1 1 1 1 1 1 4 3 3 2 1 For hard drives, GB means 1 billion bytes; using DVD+R ...SFF/USFF require slim-line optical drive) DVD+/-RW2 DVD-ROM3 Media Card Reader: Dell 19 in 1 Media Card Reader MT SATA 1.5Gbit/s SATA 1.5Gbit/s X DT SATA 1.5Gbit/s SATA 1.5Gbit/s X SFF SATA 1.5Gbit/s SATA 1.5Gbit/s USFF SATA 1.5Gbit/s SATA 1.5Gbit/s NOTE: Dell 19 in card location and priority: PCI: 1394; DELL™ OPTIPLEX™ 790...
... x16 Slot: number of PCIe x16 (wired x4)Slot: number of PCIe x1 Slot: number of miniPCIe connector: number of Serial ATA (SATA) MT DT SFF USFF 1 1 1 1 1 1 1 1 1 1 1 4 3 3 2 1 For hard drives, GB means 1 billion bytes; using DVD+R ...SFF/USFF require slim-line optical drive) DVD+/-RW2 DVD-ROM3 Media Card Reader: Dell 19 in 1 Media Card Reader MT SATA 1.5Gbit/s SATA 1.5Gbit/s X DT SATA 1.5Gbit/s SATA 1.5Gbit/s X SFF SATA 1.5Gbit/s SATA 1.5Gbit/s USFF SATA 1.5Gbit/s SATA 1.5Gbit/s NOTE: Dell 19 in card location and priority: PCI: 1394; DELL™ OPTIPLEX™ 790...
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... AMD RADEON HD 6350 with iCore Dual/Quad core class CPUGPU combo] Enhanced Graphic/Video Options DT SFF Integrated on MT and DT) Serial Parallel/2nd Serial via optional PCIex1 card 2nd Serial via optional PCIex1...VGA DisplayPort Audio: Line in for microphone Line in for microphone or stereo Line out for headphones or speakers MT DT SFF Optional FH card 4 Front, 6 Rear 1 Rear Optional LP card Optional FH card Optional FH card 1 Rear ...MT supports full height card, DT supports low profile card. SFF supports low profile card. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
... AMD RADEON HD 6350 with iCore Dual/Quad core class CPUGPU combo] Enhanced Graphic/Video Options DT SFF Integrated on MT and DT) Serial Parallel/2nd Serial via optional PCIex1 card 2nd Serial via optional PCIex1...VGA DisplayPort Audio: Line in for microphone Line in for microphone or stereo Line out for headphones or speakers MT DT SFF Optional FH card 4 Front, 6 Rear 1 Rear Optional LP card Optional FH card Optional FH card 1 Rear ...MT supports full height card, DT supports low profile card. SFF supports low profile card. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
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... Soundbar Speakers MT DT SFF USFF Integrated on system board Optional via add-in card USFF 1 This term does not connote an actual operating speed of 1 Gb/sec. SFF supports low profile card. For high speed transmission, connection to a Gigabit Ethernet server and network infrastructure is required. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 COMMUNICATIONS...
... Soundbar Speakers MT DT SFF USFF Integrated on system board Optional via add-in card USFF 1 This term does not connote an actual operating speed of 1 Gb/sec. SFF supports low profile card. For high speed transmission, connection to a Gigabit Ethernet server and network infrastructure is required. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 COMMUNICATIONS...
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.../service/service_plans 3 Year Warranty1 Next Business Day On-site2 (3-3-3) ProSupport MT DT SFF USFF Standard Optional 1 For a copy of our guarantees or limited warranties, please write Dell USA L.P., Attn: Warranties, One Dell Way, Round Rock, TX 78682. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - Depending on your country regulations, No-TPM system boards will be made...
.../service/service_plans 3 Year Warranty1 Next Business Day On-site2 (3-3-3) ProSupport MT DT SFF USFF Standard Optional 1 For a copy of our guarantees or limited warranties, please write Dell USA L.P., Attn: Warranties, One Dell Way, Round Rock, TX 78682. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - Depending on your country regulations, No-TPM system boards will be made...
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DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - Chassis Volume (liters) MT 26.27 DT 15.06 SFF 8.38 USFF 3.70 Chassis Weight (pounds/kilograms) 19.55 / 8.87 16.67 / 7.56 12.57 / 5.70 7.20 / 3.27 Chassis Dimensions: (HxWxD) Height (inches/centimeters) 14.... 19.25/48.90 15.81/40.16 10.19/25.88 19.13/48.59 14.38/36.53 9.63/24.46 MT DT SFF USFF 1 1 Height (inches/centimeters) 4.376 / 11.115 2.731 /6.89 Length (inches/centimeters) Maximum Wattage PCIex16 Slot (BLUE) (Voltage supported 3.3V/12V) Height (inches/centimeters) Length...
DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - Chassis Volume (liters) MT 26.27 DT 15.06 SFF 8.38 USFF 3.70 Chassis Weight (pounds/kilograms) 19.55 / 8.87 16.67 / 7.56 12.57 / 5.70 7.20 / 3.27 Chassis Dimensions: (HxWxD) Height (inches/centimeters) 14.... 19.25/48.90 15.81/40.16 10.19/25.88 19.13/48.59 14.38/36.53 9.63/24.46 MT DT SFF USFF 1 1 Height (inches/centimeters) 4.376 / 11.115 2.731 /6.89 Length (inches/centimeters) Maximum Wattage PCIex16 Slot (BLUE) (Voltage supported 3.3V/12V) Height (inches/centimeters) Length...
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V 1.6 SYSTEM LEVEL ENVIRONMENTAL AND OPERATING CONDITIONS Temperature Operating Non-Operating (Storage) Relative Humidity Maximum vibration Operating Non-Operating Maximum Shock MT DT SFF USFF 10°to 35°C (50°to 95°F) -40°to 65°C (-40°to -149°F) 20% to 80% (non-... of 508 cm/sec (200 inches/sec) -15.2 to 3048 m (-50 to 10,000 ft) -15.2 to 10,668 m (-50 to 35,000 ft) 20 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
V 1.6 SYSTEM LEVEL ENVIRONMENTAL AND OPERATING CONDITIONS Temperature Operating Non-Operating (Storage) Relative Humidity Maximum vibration Operating Non-Operating Maximum Shock MT DT SFF USFF 10°to 35°C (50°to 95°F) -40°to 65°C (-40°to -149°F) 20% to 80% (non-... of 508 cm/sec (200 inches/sec) -15.2 to 3048 m (-50 to 10,000 ft) -15.2 to 10,668 m (-50 to 35,000 ft) 20 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
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... output for APFC PSUs, not an approximation of a Sine Wave, Square Wave, or quasi -Square Wave. Dell recommends only Universal Power Supplies (UPS) based on PSU max wattage) 4.0A 0.5A 265W 90W 240W 904 ... 4.0 0.5A 255W 90W N/A 853 BTU 80*20/25m m 853 BTU 80*20/25m m Yes Yes Yes Yes No Yes Yes Yes SFF APFC EPA 240W 240W High Efficiency 90 - 264Vac 90 - 264Vac 4.0A / 2.0A 4.0A / 2.0A 47HZ / 63HZ 16MSEC 65%... +12VB - 6.0 A Note: +12VB Rated at 0.4A when in Standby Mode. If you have questions, please contact the manu- DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
... output for APFC PSUs, not an approximation of a Sine Wave, Square Wave, or quasi -Square Wave. Dell recommends only Universal Power Supplies (UPS) based on PSU max wattage) 4.0A 0.5A 265W 90W 240W 904 ... 4.0 0.5A 255W 90W N/A 853 BTU 80*20/25m m 853 BTU 80*20/25m m Yes Yes Yes Yes No Yes Yes Yes SFF APFC EPA 240W 240W High Efficiency 90 - 264Vac 90 - 264Vac 4.0A / 2.0A 4.0A / 2.0A 47HZ / 63HZ 16MSEC 65%... +12VB - 6.0 A Note: +12VB Rated at 0.4A when in Standby Mode. If you have questions, please contact the manu- DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
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DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - INTEGRATED INTEL® 82579 GIGABIT1 ETHERNET LAN 10...-TX (half-duplex) 100 Mbps 100BASE-TX (full-duplex) 200 Mbps 1000BASE-T (full-duplex) 2000 Mbps MT DT SFF USFF RJ45 10/100/1000 Mbps PCIe-based interface for S0 state, SMBus for ADC inputs X X X X 40K ohm... V 1.6 AUDIO INTEGRATED REALTEK ALC269Q HIGH DEFINITION AUDIO High Definition Stereo support Number of channels Number of Bits / Audio resolution MT DT SFF USFF X X X X 2 16, 20, and 24-bit resolution Sampling rate (recording/playback) Support 44.1K/48K/96K/192 ...
DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - INTEGRATED INTEL® 82579 GIGABIT1 ETHERNET LAN 10...-TX (half-duplex) 100 Mbps 100BASE-TX (full-duplex) 200 Mbps 1000BASE-T (full-duplex) 2000 Mbps MT DT SFF USFF RJ45 10/100/1000 Mbps PCIe-based interface for S0 state, SMBus for ADC inputs X X X X 40K ohm... V 1.6 AUDIO INTEGRATED REALTEK ALC269Q HIGH DEFINITION AUDIO High Definition Stereo support Number of channels Number of Bits / Audio resolution MT DT SFF USFF X X X X 2 16, 20, and 24-bit resolution Sampling rate (recording/playback) Support 44.1K/48K/96K/192 ...
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...sec. V 1.6 COMMUNICATIONS - INTEGRATED LAN NOTE: MT supports full height card, DT supports low profile card. COMMUNICATIONS - DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - Broadcom NetXtreme 10/100/1000 PCIe Gigabit1 Networking Card Connector Type Data Rates supported Controller Details Controller bus ... (CONT.) Environmental Operating temperature Operating humidity Operating System Driver Support Manageability (examples WOL, PXE) Management Capabilities Alerting MT DT SFF USFF 0°C to 85°C (32°F to 185°F) 20% to a Gigabit Ethernet server and network ...
...sec. V 1.6 COMMUNICATIONS - INTEGRATED LAN NOTE: MT supports full height card, DT supports low profile card. COMMUNICATIONS - DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - Broadcom NetXtreme 10/100/1000 PCIe Gigabit1 Networking Card Connector Type Data Rates supported Controller Details Controller bus ... (CONT.) Environmental Operating temperature Operating humidity Operating System Driver Support Manageability (examples WOL, PXE) Management Capabilities Alerting MT DT SFF USFF 0°C to 85°C (32°F to 185°F) 20% to a Gigabit Ethernet server and network ...
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... PCIE GIGABIT1 NETWORKING CARD (CONT.) Environmental Operating temperature Operating humidity Operating System Driver Support Manageability (examples WOL, PXE) Management Capabilities Alerting (example ASF 2.0) MT DT SFF USFF 0°C to a Gigabit Ethernet server and network infrastructure is required. 25 For high speed transmission, connection to 55°C (32°F - 131°..., Windows Vista Home Basic, Linux WOL, PXE2.1, ACPI None 1 This term does not connote an actual operating speed of 1 Gb/sec. V 1.6 COMMUNICATIONS - DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
... PCIE GIGABIT1 NETWORKING CARD (CONT.) Environmental Operating temperature Operating humidity Operating System Driver Support Manageability (examples WOL, PXE) Management Capabilities Alerting (example ASF 2.0) MT DT SFF USFF 0°C to a Gigabit Ethernet server and network infrastructure is required. 25 For high speed transmission, connection to 55°C (32°F - 131°..., Windows Vista Home Basic, Linux WOL, PXE2.1, ACPI None 1 This term does not connote an actual operating speed of 1 Gb/sec. V 1.6 COMMUNICATIONS - DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
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DELL WIRELESS 1520 PCIE MINI PCIE WLAN CARD (802.11N) MT DT SFF USFF External Connector Type Controller Details Controller bus architecture WLAN ...32/64 COMMUNICATIONS - WIRELESS NOTE: Native DisplayPort on the DT and SFF chassis. USB 3.0 ADD-IN CARD NOTE: MT supports full height (FH) cards and DT and SFF supports low profile (LP) cards. USB 3.0 PORT PCIE ADD-IN ... IO Ports Power Consumption Connector Full height USB3.0 add-in card Half height USB3.0 add-in card OS Support MT DT SFF USFF PCI Express Gen. 2.0 X1 PCI Express one lane (x1) NEC µPD720200 2 * USB3.0 port Under 30...
DELL WIRELESS 1520 PCIE MINI PCIE WLAN CARD (802.11N) MT DT SFF USFF External Connector Type Controller Details Controller bus architecture WLAN ...32/64 COMMUNICATIONS - WIRELESS NOTE: Native DisplayPort on the DT and SFF chassis. USB 3.0 ADD-IN CARD NOTE: MT supports full height (FH) cards and DT and SFF supports low profile (LP) cards. USB 3.0 PORT PCIE ADD-IN ... IO Ports Power Consumption Connector Full height USB3.0 add-in card Half height USB3.0 add-in card OS Support MT DT SFF USFF PCI Express Gen. 2.0 X1 PCI Express one lane (x1) NEC µPD720200 2 * USB3.0 port Under 30...
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DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - SERIAL PORT PCIE ADD-IN CARD NOTE: MT supports full height (FH) cards and DT and SFF supports low profile (LP) cards. SERIAL / PARALLEL PORT PCIE ADD-IN CARD NOTE: MT supports full height (FH) cards and DT and SFF supports low profile (LP) cards...example PCIe 1.0a x1) Driver Support Full height Serial / Parallel add-in card Environment Operation Temperature Operation Humidity Storage Temperature MT DT SFF USFF RS-232 50bps ~115.2Kbps PCI Express one lane (x1) Microsoft Client XP/Vista/7 (X86/X64) Microsoft Server 2000/2003/...
DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - SERIAL PORT PCIE ADD-IN CARD NOTE: MT supports full height (FH) cards and DT and SFF supports low profile (LP) cards. SERIAL / PARALLEL PORT PCIE ADD-IN CARD NOTE: MT supports full height (FH) cards and DT and SFF supports low profile (LP) cards...example PCIe 1.0a x1) Driver Support Full height Serial / Parallel add-in card Environment Operation Temperature Operation Humidity Storage Temperature MT DT SFF USFF RS-232 50bps ~115.2Kbps PCI Express one lane (x1) Microsoft Client XP/Vista/7 (X86/X64) Microsoft Server 2000/2003/...
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...Bus Type GPU core clock Frame Buffer Memory (onboard and shared) Size and Speed Overlay Planes MT DT SFF USFF Integrated Gen6 Core Intel® HD Graphics /HD Graphics 2000 @ 850MHz Depends on available system ...memory(Up to 1.7GB with Celeron/Pentium class CPU-GPU combo] 2. SFF supports low profile card. The DisplayPort controller does not support multi-monitor display in DOS 3 Populating a discrete graphics... NOTE: MT supports full height card, DT supports low profile card. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -
...Bus Type GPU core clock Frame Buffer Memory (onboard and shared) Size and Speed Overlay Planes MT DT SFF USFF Integrated Gen6 Core Intel® HD Graphics /HD Graphics 2000 @ 850MHz Depends on available system ...memory(Up to 1.7GB with Celeron/Pentium class CPU-GPU combo] 2. SFF supports low profile card. The DisplayPort controller does not support multi-monitor display in DOS 3 Populating a discrete graphics... NOTE: MT supports full height card, DT supports low profile card. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -