Replacement for KSY-U101-51: Drop-In Alternatives We Stock
Looking for a replacement for the KSY-U101-51 (Kingston KSY-U101/51 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 172-Pin Micro-DIMM Memory Module)? Pro Disk Network ships Kingston 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 KSY-U101-51
| SKU | KSY-U101-51 |
|---|---|
| Product | Kingston KSY-U101/51 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 172-Pin Micro-DIMM Memory Module |
| Current price | $200.63 |
| Stock status | In Stock |
| Detail page | View KSY-U101-51 › |
Drop-in replacements for KSY-U101-51
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.
Kingston KSY-GRX500/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KSY-GRX500-512
Price: $109.55
Kingston KSY-V505/512 512MB DDR-333MHz PC2700 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KSY-V505-512
Price: $117.92
Kingston KTS7066/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTS7066-512
Price: $108.66
Kingston KTH-LJ4650/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTH-LJ4650-512
Price: $108.66
Kingston KTH-LJ4730/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTH-LJ4730-512
Price: $108.66
Kingston KTD-INSP8200/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTD-INSP8200-512
Price: $109.55
Kingston KTT3614/512I 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTT3614-512I
Price: $109.55
SOT64X64D266SC25 - Kingston 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: SOT64X64D266SC25
Price: $109.55
Kingston KTD-INSP8200/512-G 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTD-INSP8200-512-G
Price: $109.55
Kingston KTH-OB6200/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTH-OB6200-512
Price: $109.55
Kingston KTD-INSP820/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTD-INSP820-512
Price: $109.55
Kingston KTC-P2800/512 512MB DDR-266MHz PC2100 non-ECC Unbuffered CL2.5 200-Pin SoDimm Memory Module
SKU: KTC-P2800-512
Price: $109.55
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.