Which OptiPlex 990 version does this board fit?

Only the Ultra Small Form Factor (USFF) model. The mini-tower and small-form-factor 990 use different boards and will not take this one.

Which processors does it support?

Intel 2nd-generation Core processors on the LGA 1155 socket, such as the i3-2100, i5-2400 or i7-2600. Third-generation chips are not supported.

What memory does it take?

DDR3 SDRAM in the SO-DIMM slots used by the 990 USFF. Check the original machine's configuration for capacity limits.

Is this a new or used part?

These boards are typically sold as used pulls from decommissioned machines. Inspect the CPU socket pins and confirm the PGKWF part number on arrival.

Does it come with a cooler, I/O shield or CMOS battery?

Usually the board alone. Reuse the cooler, shield and battery from the old machine, or confirm with the seller what is included.

Will it work with my existing Windows install?

A like-for-like board swap usually boots the existing install. If the board revision differs, you may need to reactivate Windows or update drivers.

Where is the Dell OptiPlex 990 USFF Motherboard cheapest?

At Walmart, for $19.98, as of our latest check.

Dell OptiPlex 990 USFF Motherboard

Best price now

$19.98at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

Dell OptiPlex 990 USFF Motherboard

Best price now

$19.98at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $19.98 at Walmart on Nov 10.

Our take on the Dell OptiPlex 990 USFF Motherboard

This is the genuine Dell replacement board for the OptiPlex 990 Ultra Small Form Factor desktop, part number PGKWF (0PGKWF). It uses the LGA 1155 socket for Intel 2nd-generation Core processors and takes DDR3 memory, so it fits the 990 USFF chassis and its power and front-panel connectors without adapters. It is a repair part, not an upgrade: it restores a dead or failing 990 USFF rather than adding newer features. Buyers choose it over generic LGA 1155 boards because the mounting, port layout and BIOS match the original machine; third-party boards rarely fit the USFF case or its external power brick.

Best forReviving a dead OptiPlex 990 USFFReplacing a failed or damaged original boardKeeping a working 990 USFF in serviceRepair shops servicing Dell business desktops

Pros

Genuine Dell part with correct PGKWF fit for the 990 USFF chassis
LGA 1155 socket supports Intel 2nd-gen Core i3, i5 and i7 chips
DDR3 memory support matches the original build
Exact port and connector layout for the USFF case and power supply
Restores original BIOS and Dell diagnostics

Cons

Old platform: no support for 3rd-gen or later Intel CPUs
DDR3 only, capped by the 990 USFF's memory limits
USFF-only fit; will not go in mini-tower or small-form-factor 990s
Used pulls may arrive without I/O shield, cooler or CMOS battery
No modern ports such as USB 3.1, M.2 or NVMe

Dell OptiPlex 990 USFF Motherboard prices at every store

WalmartNew
In stockSold by AmoldarReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$19.98Free shippingChecked Nov 10
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What reviewers say

They report it drops in and boots with the original power brick and front panel, provided the board is the correct PGKWF revision. Complaints center on used boards arriving with bent socket pins or missing accessories.

What people mention

FitPraisedOwners say it mounts and connects correctly in the 990 USFF chassis.
Socket conditionCriticisedBuyers of used boards report bent LGA 1155 pins on arrival.
AccessoriesCriticisedSome boards come without the I/O shield or CMOS battery.
CompatibilityPraisedIt works with the original Dell power brick and 2nd-gen Core CPUs.
AgeMixedThe platform is dated, so it repairs rather than upgrades the machine.

About the Dell OptiPlex 990 USFF Motherboard

This is the Dell OptiPlex 990 USFF system motherboard, part number PGKWF (0PGKWF). It is a genuine Dell board made for ultra-small form factor (USFF) systems. It can be used to replace the board in, or refurbish, a Dell OptiPlex 990 desktop.

The board has an LGA 1155 socket and supports DDR3 SDRAM memory. It works with Intel 2nd generation Core processors.

Brand: Dell
Part number: PGKWF (0PGKWF)
Form factor: Ultra-small form factor (USFF)
CPU socket: LGA 1155
Memory type: DDR3 SDRAM
Processor support: Intel 2nd generation Core
Compatibility: Dell OptiPlex 990 USFF

Questions and answers

Which OptiPlex 990 version does this board fit?: Only the Ultra Small Form Factor (USFF) model. The mini-tower and small-form-factor 990 use different boards and will not take this one.
Which processors does it support?: Intel 2nd-generation Core processors on the LGA 1155 socket, such as the i3-2100, i5-2400 or i7-2600. Third-generation chips are not supported.
What memory does it take?: DDR3 SDRAM in the SO-DIMM slots used by the 990 USFF. Check the original machine's configuration for capacity limits.
Is this a new or used part?: These boards are typically sold as used pulls from decommissioned machines. Inspect the CPU socket pins and confirm the PGKWF part number on arrival.
Does it come with a cooler, I/O shield or CMOS battery?: Usually the board alone. Reuse the cooler, shield and battery from the old machine, or confirm with the seller what is included.
Will it work with my existing Windows install?: A like-for-like board swap usually boots the existing install. If the board revision differs, you may need to reactivate Windows or update drivers.
Where is the Dell OptiPlex 990 USFF Motherboard cheapest?: At Walmart, for $19.98, as of our latest check.