Replacement for P48121000A040G: Drop-In Alternatives We Stock
Looking for a replacement for the P48121000A040G (P48121000A040G - 3Com 21-Watts 120V 60Hz AC Adapter)? 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 P48121000A040G
| SKU | P48121000A040G |
|---|---|
| Product | P48121000A040G - 3Com 21-Watts 120V 60Hz AC Adapter |
| Current price | $183.08 |
| Stock status | In Stock |
| Detail page | View P48121000A040G › |
Drop-in replacements for P48121000A040G
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.
03RG0T - Dell 45-Watt 100-120V AC Adapter for XPS 13 (L321X) / Inspiron 14 -7437
SKU: 03RG0T
Price: $127.86
3RG0T - Dell 45-Watt 100-120V AC Adapter for XPS 13 (L321X) / Inspiron 14 -7437
SKU: 3RG0T
Price: $127.86
306592-B21 - HP 750-Watts 110-120V Hot-Pluggable Power Supply for Proliant 3000
SKU: 306592-B21
Price: $73.68
KC672 - Dell 220-Watts 100-120V / 200-240V Power Supply with PFC for OptiPlex GX520 GX620 Dimension C521
SKU: KC672
Price: $96.84
NC905 - Dell 230-Watts 100-120V/200-240V ATX Power Supply for OptiPlex 210L,Dimension E310/3100
SKU: NC905
Price: $96.84
PS-5221-2DF-LF - Dell 220-Watts 100-120V / 200-240V Power Supply for OptiPlex GX520 GX620
SKU: PS-5221-2DF-LF
Price: $96.84
MC633 - Dell 230-Watts 100-120V/200-240V Power Supply for OptiPlex 210L/GX250,Dimension E310/3100
SKU: MC633
Price: $96.84
NPS-210AB - Dell 210-Watts 100-120V / 200-240V Power Supply for OptiPlex GX240 GX260
SKU: NPS-210AB
Price: $128.95
PS-2112-2D1-LF - Dell 1100-Watts 100-120V / 200-240V Power Supply for PowerEdge R510 C6100 C6220 / Precision R7610
SKU: PS-2112-2D1-LF
Price: $138.95
0NC905 - Dell 230-Watts 100-120V/200-240V ATX Power Supply for OptiPlex 210L/Dimension E310/3100
SKU: 0NC905
Price: $143.39
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.