Replacement for 166618-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 166618-B21 (166618-B21 - Compaq 128MB DDR-100MHz PC-100 ECC Unbuffered CL2 168-Pin DIMM Memory Module)? Pro Disk Network ships drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the 166618-B21
| SKU | 166618-B21 |
|---|---|
| Product | 166618-B21 - Compaq 128MB DDR-100MHz PC-100 ECC Unbuffered CL2 168-Pin DIMM Memory Module |
| Stock status | In Stock |
| Detail page | View 166618-B21 › |
Drop-in replacements for 166618-B21
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
KTHLJ4100128 - Kingston 128MB 100MHz PC100 non-ECC Unbuffered CL2 100-Pin SoDimm Memory Module for Compaq C9121A, Q9121A
SKU: KTHLJ4100128
Price: $83.88
323013-001 - Compaq 128MB 100MHz PC100 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 323013-001
Price: $71.58
304287-001 - Compaq 128MB 100MHz PC100 non-ECC Unbuffered CL2 144-Pin SoDimm Memory Module
SKU: 304287-001
Price: $77.42
209874-001 - Compaq 128MB 100MHz PC100 non-ECC Unbuffered CL2 144-Pin SoDimm Memory Module for Notebook PCs
SKU: 209874-001
Price: $77.42
388189-002 - Compaq 128MB 100MHz PC100 non-ECC Unbuffered CL2 144-Pin SoDimm Memory Module for Armada M700 / E500 Notebook PC
SKU: 388189-002
Price: $77.42
Kingston KTH-OB4150/128 128MB 100MHz PC100 non-ECC Unbuffered CL2 144-Pin SoDimm Memory Module for Compaq F1622B
SKU: KTH-OB4150-128
Price: $83.88
166965-001 - Compaq 128MB 100MHz PC100 ECC-Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 166965-001
Price: $89.58
323017-001 - Compaq 128MB 100MHz PC100 ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: 323017-001
Price: $89.58
MT16LSDT1664AG-100 - Micron 128MB 100MHz PC100 non-ECC Unbuffered CL2 168-Pin DIMM Memory Module
SKU: MT16LSDT1664AG-100
Price: $89.67
C9121A - HP 128MB 100MHz PC100 non-ECC Unbuffered CL2 100-Pin DIMM 3.3V Memory Module
SKU: C9121A
Price: $153.74
C9121-67901 - HP 128MB 100MHz PC100 non-ECC Unbuffered 100-Pin DIMM Memory Module for Color LaserJet 2550 Series Printers
SKU: C9121-67901
Price: $153.74
Q7709-67951 - HP 128MB SDRAM-100MHz PC100 non-ECC Unbuffered 100-Pin DIMM Memory Module
SKU: Q7709-67951
Price: $153.74
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.