Replacement for 661-5420: Drop-In Alternatives We Stock
Looking for a replacement for the 661-5420 (661-5420 - Apple 3.33GHz CPU Logic Board (Motherboard) for iMac 21.5-inch Late 2009)? 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 661-5420
| SKU | 661-5420 |
|---|---|
| Product | 661-5420 - Apple 3.33GHz CPU Logic Board (Motherboard) for iMac 21.5-inch Late 2009 |
| Current price | $2,783.66 |
| Stock status | In Stock |
| Detail page | View 661-5420 › |
Drop-in replacements for 661-5420
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.
661-4708 - Apple 2.1GHz CPU Logic Board (Motherboard) for MacBook 13-inch Late 2008 A1181
SKU: 661-4708
Price: $259.50
661-5101 - Apple 2.0GHz CPU Logic Board (Motherboard) for MacBook 13-inch Late 2008 A1278
SKU: 661-5101
Price: $282.20
661-6024 - Apple i3 3.1GHz Dual-Core CPU Logic Board (Motherboard) for iMac 21.5-inch Late 2011
SKU: 661-6024
Price: $291.79
661-7517 - Apple 3.4GHz CPU Logic Board (Motherboard) for iMac 27-inch Late 2013 A1419
SKU: 661-7517
Price: $887.32
661-00191 - Apple Intel Core i5 3.5GHz CPU 2GB Logic Board (Motherboard) for iMac 27-inch Retina 5K Late 2014
SKU: 661-00191
Price: $952.71
661-00193 - Apple Intel Core i7 4.0GHz CPU 2GB Logic Board (Motherboard) for iMac 27-inch Retina 5K Late 2014
SKU: 661-00193
Price: $952.71
661-4136 - Apple 1.66GHz CPU Logic Board (Motherboard) for Mac Mini Late 2006 A1176
SKU: 661-4136
Price: $1,068.08
661-4137 - Apple 1.83GHz CPU Logic Board (Motherboard) for Mac Mini Late 2006 A1176
SKU: 661-4137
Price: $1,068.08
661-5291 - Apple 2.53GHz CPU Logic Board (Motherboard) for Mac Mini Late 2009
SKU: 661-5291
Price: $1,293.13
661-5389 - Apple 2.66GHz CPU Logic Board (Motherboard) for Mac Mini Late 2009 A1283
SKU: 661-5389
Price: $1,337.41
661-03170 - Apple Intel Core i5 3.2GHz CPU 2GB Logic Board (Motherboard) for iMac 27-inch Retina 5K Late 2015 A1419
SKU: 661-03170
Price: $1,609.26
661-03172 - Apple Intel Core i7 4.0GHz CPU Logic Board (Motherboard) for iMac 27-inch Late 2015
SKU: 661-03172
Price: $1,697.68
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.