This LGA4189 CPU socket dust cover protects the exposed contact field of a vacant server or workstation processor socket during motherboard storage, shipping, assembly, testing, repair, and processor replacement.
Part number 2-2330553-1 is designed for both Socket P4 and Socket P5 LGA4189 bolster assemblies. It cross-references the K37262-004 marking molded into compatible covers. Molded wording, reference revisions, and minor cosmetic details may vary, but supplied covers use the same full-size LGA4189 mounting geometry.
We specialize in high-volume sourcing and fulfillment for CPU socket covers and related server components. We can fulfill orders of any size, including requirements exceeding 100,000 units.
Buy with confidence. For very large orders, production requirements, scheduled releases, or custom packaging and quantity requirements, contact us so we can coordinate availability, packaging, quantities, and delivery.
Verified P4/P5 cover and molded references:
2-2330553-1, K37262-004
Verified P4-only alternate cover number:
WNMBD00-1NNK0-EH
Legacy and engineering references:
2330553, K37262-002, C-2330553, ENG_CD_2330553_B
K37262-004 is molded into the photographed cover and appears on the released drawing for 2-2330553-1. K37262-002 is an earlier molded/drawing revision for the same cover family. C-2330553 and ENG_CD_2330553_B are drawing or document references rather than separate orderable covers.
The P4-only alternate should not be assumed compatible with P5 systems. For combined P4/P5 coverage, order by 2-2330553-1 or verify the K37262-004 geometry.
Please note that the following list is not exhaustive. Compatibility is determined by the installed LGA4189 P4 or P5 bolster geometry—not by the processor or system name alone. Verify the original cover number, four alignment posts, end-latch geometry, and motherboard documentation before ordering.
✔️ General LGA4189 Support: Motherboards using an LGA4189 P4 or P5 bolster assembly designed for cover 2-2330553-1 / K37262-004
✔️ P4 Processor Platforms: Compatible LGA4189-4 motherboards designed for third-generation 4300, 5300, 6300, and 8300-series server processors or W-3300 workstation processors
✔️ P5 Processor Platforms: Compatible LGA4189-5 multi-socket motherboards designed for third-generation 8300H and 8300HL processor models
✔️ M20 / M50 / D40 / D50 Server Boards: M20NTP2SB, M50CYP2SB1U, M50CYP2SBSTD, D40AMP1SB, D50TNP1SB, D50TNP1SBCR
✔️ Associated M-Series Systems: M20NTP1UR, M50CYP1UR, M50CYP2UR, D40AMP1MHCPAC
✔️ X12 / B12 Motherboard and Processor-Board Models: X12SPZ-SPLN6F, X12SPZ-LN4F, X12SPW-TF, X12SPW-F, X12SPT-GC, X12SPT-G, X12SPO-NTF, X12SPO-F, X12SPM-TF, X12SPM-LN6TF, X12SPM-LN4F, X12SPL-LN4F, X12SPL-F, X12SPi-TF, X12SPED-F, X12SPA-TF, X12QCH+, X12DSC-A6, X12DSC-6, X12DPU-6, X12DPT-PT6, X12DPT-B6, X12DPL-NT6, X12DPL-i6, X12DPi-NT6, X12DPi-N6, X12DPG-U6, X12DPG-QT6, X12DPG-QBT6, X12DPG-OA6-GD2, X12DPG-OA6, X12DPG-AR, X12DPFR-AN6, X12DPD-A6M25, X12DHM-6, X12DGU, X12DGQ-R, X12DGO-6, X12DDW-A6, X12DAI-N6, B12SPE-CPU-25G, B12DPT-6, B12DPE-6
✔️ MD / MU Motherboard Models: MD72-HB0, MD72-HB1, MD72-HB2, MD72-HB3, MU72-SU0, MU92-TU0, MU92-TU1
✔️ SPC621 / SP2C621 Motherboard Models: SPC621D8, SPC621D8-2T, SPC621D8-2L2T, SP2C621D16N, SP2C621D16-2T, SP2C621D16-2L+, SP2C621D32LM3, SP2C621D32GM-2T
✔️ Z12 and E10 Models: Z12PP-D32, RS700-E10-RS12U, RS720-E10-RS12, RS720-E10-RS12E, RS720-E10-RS24U, ESC4000-E10, ESC4000-E10S
✔️ 15th-Generation R / T / C / MX / XE / XR Systems: R450, R550, R650, R650xs, R750, R750xs, R750xa, R850, R950, T550, C6520, MX750c, XE8545, XR11, XR12
✔️ Gen10 Plus System Models: DL110 Gen10 Plus, DL360 Gen10 Plus, DL380 Gen10 Plus, 480 Gen10 Plus Compute Module
✔️ V2 Server Models: SR630 V2, SR650 V2, SR670 V2, SR850 V2, SR860 V2, ST650 V2, SD630 V2, SD650 V2, SD650-N V2, SN550 V2, SN850 V2
✔️ C / B / X M6 Models: C220 M6, C240 M6, B200 M6, X210c M6
✔️ RX / CX M6 Models: RX2530 M6, RX2540 M6, RX4770 M6, CX2550 M6, CX2560 M6
✔️ Service and Manufacturing Applications: Motherboard assembly, system integration, refurbishment, processor replacement, warehouse storage, RMA handling, testing, recycling, transport, and long-term spare-board protection
☑️ Covers the complete LGA4189 contact field while no processor is installed
☑️ One cover design supports both P4 and P5 bolster assemblies
☑️ Helps protect 4,189 delicate socket contacts from dust, packaging material, handling, and accidental contact
☑️ Four-position alignment system helps prevent incorrect placement
☑️ Squeeze-grip end tabs provide controlled installation and removal
☑️ Molded INSTALL and REMOVE arrows assist with proper handling
☑️ Reusable design intended to be saved and reinstalled
☑️ Tool-free installation when the correct bolster is present
☑️ Suitable for single-, dual-, four-, and eight-socket motherboard applications
☑️ Useful for repair facilities, data centers, manufacturers, recyclers, system builders, and spare-parts programs
☑️ Molded reference revision and cosmetic details may vary while maintaining the required geometry
✓ Verify that the motherboard uses an LGA4189 P4 or P5 bolster assembly matching 2-2330553-1 / K37262-004.
✓ The same 2-2330553-1 cover fits P4 and P5 bolsters. This does not make P4 and P5 processors, carrier clips, socket segments, bolsters, or heatsink assemblies interchangeable.
✓ WNMBD00-1NNK0-EH is documented as a P4-only alternate and should not automatically be substituted in P5 applications.
✓ This cover is not compatible with LGA3647, LGA4677, LGA4710, LGA7529, SP3, SP5, SP6, or other socket families.
✓ The cover attaches to the installed bolster plate. It is not intended to attach directly to a completely bare socket without the proper bolster hardware.
✓ This is a removable service dust cover—not the temporary PnP cap used while socket segments are soldered to a motherboard.
