Replacement for C3900-SPE100-K9: Drop-In Alternatives We Stock
Looking for a replacement for the C3900-SPE100-K9 (Cisco C3900-SPE100/K9 Services Performance Engine 100)? Pro Disk Network ships Cisco 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 C3900-SPE100-K9
| SKU | C3900-SPE100-K9 |
|---|---|
| Product | Cisco C3900-SPE100/K9 Services Performance Engine 100 |
| Current price | $276.32 |
| Stock status | In Stock |
| Detail page | View C3900-SPE100-K9 › |
Drop-in replacements for C3900-SPE100-K9
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.
ISM-SRE-300-BUN-K9 - Cisco 3900 Series Services Ready Engine (SRE) 300 ISM
SKU: ISM-SRE-300-BUN-K9
Price: $99.55
SM-SRE-900-K9 - Cisco Services Ready Engine 900 SM Control Processor
SKU: SM-SRE-900-K9
Price: $374.46
ISM-SRE-300-K9 - Cisco Services Ready Engine 300 ISM Control Processor
SKU: ISM-SRE-300-K9
Price: $433.95
MEM-10K-CPTFL1G - Cisco 1GB CompactFlash (CF) Memory Card for C10000 Performance Routing Engine(PRE)
SKU: MEM-10K-CPTFL1G
Price: $320.17
10000-PREMEMFD64 - Cisco 64MB Flash Memory for 10000 Series Performance Routing Engine(PRE)
SKU: 10000-PREMEMFD64
Price: $371.11
WS-SUP32-GE-3B-RF - Cisco 8-Slot SFP 1 x RJ-45 10/100/1000Base-T Supervisor Engine 32 Control processor
SKU: WS-SUP32-GE-3B-RF
Price: $336.49
WS-SUP720-3BXL - Cisco Catalyst 7600 Series 10/100/1000Base-T Supervisor Engine
SKU: WS-SUP720-3BXL
Price: $440.63
NPE-G2 - Cisco 3 x 10/100/1000Base-T 3 x SFP (mini-GBIC) 1 x CompactFlash Card Slot Network Processing Engine
SKU: NPE-G2
Price: $448.51
NME-WAE-502-K9 - Cisco Wide Area Application Services (WAAS) 1 x 10/100/1000Base-T Network Module for 2800 3800 Series Router
SKU: NME-WAE-502-K9
Price: $157.42
Cisco C1861-SRST-F/K9 1861 8-Port 8 x 10/100/ PoE Fast Ethernet Integrated Services Router
SKU: C1861-SRST-F-K9
Price: $326.14
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.