Replacement for 661FM-L: Drop-In Alternatives We Stock
Looking for a replacement for the 661FM-L (661FM-L - MSI Desktop Board Pentium 4 (Extreme Edition), Pentium 4, Celeron-D, Celeron SiS 661FX, SiS 963L MuTIOL Media I/O Socket 478 2GB DDR SDRAM 266 MHz, 333 MHz, 400 MHz)? 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 661FM-L
| SKU | 661FM-L |
|---|---|
| Product | 661FM-L - MSI Desktop Board Pentium 4 (Extreme Edition), Pentium 4, Celeron-D, Celeron SiS 661FX, SiS 963L MuTIOL Media I/O Socket 478 2GB DDR SDRAM 266 MHz, 333 MHz, 400 MHz |
| Stock status | In Stock |
| Detail page | View 661FM-L › |
Drop-in replacements for 661FM-L
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.
P4S8X-MX - ASUS SiS 661GX/SiS 964 Chipset Pentium 4/ Celeron Processors Support Socket LGA478 micro-ATX Motherboard
SKU: P4S8X-MX
Price: $326.00
P4P800 SE - ASUSTeK Desktop Board Pentium 4 (Extreme Edition), Pentium 4, Celeron, Celeron-D Intel 865PE MCH Socket 478 4GB DDR SDRAM 400 MHz, 333 MHz, 266 MHz ATX
SKU: P4P800-SE
Price: $552.63
P5LD2 - ASUS Intel 945P/ICH7R Chipset Core 2 Extreme/ Core 2 Duo/ Pentium Extreme/ Pentium D/ Pentium 4/ Celeron D Processors Support Socket LGA775
SKU: P5LD2
Price: $481.87
P5K-VM - ASUS Intel G33/ ICH9 Chipset Core 2 Quad/ Core 2 Extreme/ Core 2 Duo/ Pentium Extreme/ Pentium D/ Pentium 4 Processors Support Socket 775 mi
SKU: P5K-VM
Price: $211.58
P5E-VM - ASUS Intel G35 Chipset Core 2 Quad/ Core 2 Extreme/ Core 2 Duo/ Pentium Extreme/ Pentium D/ Pentium 4 Processors Support Socket LGA775 micro
SKU: P5E-VM
Price: $473.22
ASUS P5K/EPU Intel P35 Chipset Core 2 Quad/ Core 2 Extreme/ Core 2 Duo/ Pentium Extreme/ Pentium D/ Pentium 4 Processors Support Socket 775 ATX Moth
SKU: P5K-EPU
Price: $478.84
5187-0317 - HP System Board (Motherboard) Socket 478 for Pavilion 7xx Series SIS Desktop
SKU: 5187-0317
Price: $205.26
P5Q-VMDO - ASUS Intel Q45 Chipset Core 2 Quad/ Core 2 Extreme/ Core 2 Duo/ Pentium Dual-Core/ Celeron Dual-Core/ Celeron Processors Support Socket 775
SKU: P5Q-VMDO
Price: $473.26
P4S800-MX - ASUS Socket 478 P4/Celeron Motherboard max 3.06GHz+ SIS 661FX/963L
SKU: P4S800-MX
Price: $239.47
D201GLY2 - Intel SIS SIS662 Micro ATX ESSENTIAL Series Desktop Motherboard
SKU: D201GLY2
Price: $235.79
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.