Replacement for 3C16990: Drop-In Alternatives We Stock
Looking for a replacement for the 3C16990 (3C16990 - 3Com Superstack II 9000 Switch 8 x 1000Base-SX LAN)? 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 3C16990
| SKU | 3C16990 |
|---|---|
| Product | 3C16990 - 3Com Superstack II 9000 Switch 8 x 1000Base-SX LAN |
| Stock status | In Stock |
| Detail page | View 3C16990 › |
Drop-in replacements for 3C16990
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.
3C17700 - 3Com SuperStack 3 Switch 4900 1 x Expansion Slot 12 x 100/1000Base-T LAN
SKU: 3C17700
Price: $363.83
3C16490 - 3Com Baseline 2226 PWR Plus Switch 24 x 10/100Base-TX LAN 2 x 10/100/1000Base-T LAN 2 x SFP (mini-GBIC) Ethernet Switch
SKU: 3C16490
Price: $211.00
FS726TP - Netgear ProSafe 24-Port 10/100 Switch with PoE 24 x 10/100Base-TX LAN 2 x 10/100/1000Base-T LAN 2 x SFP (mini-GBIC) Ethernet Switch
SKU: FS726TP
Price: $298.46
3CRWX120695A - 3Com Wireless LAN Switch WX1200 Fast EN 8-Port Lan Switch
SKU: 3CRWX120695A
Price: $521.37
A2H254-16 - Enterasys SecureStack Stackable Fast Ethernet Switch 8 x 10/100Base-TX LAN 8 x 100Base-FX LAN 2 x SFP (mini-GBIC) Stackable Ethernet Switch
SKU: A2H254-16
Price: $565.32
3C17401 - 3Com SuperStack 3 Switch 3800 12 x 10/100/1000Base-T 4 x SFP (mini-GBIC) Ethernet Switch
SKU: 3C17401
Price: $503.09
28655-60001 - HP Single-Ended SCSI-2 Centronics Host Adapter Board for 9000 800/G40 9000 E35 Server
SKU: 28655-60001
Price: $73.68
C8519-69037 - HP High Voltage Power Supply Board for LaserJet 9000 9040 9050 9000
SKU: C8519-69037
Price: $182.37
RG5-5646 - HP Left Door Assembly Includes Face-up Delivery Assembly for HP LaserJet 9000 / 9000 Multi Function Printer
SKU: RG5-5646
Price: $308.95
RG5-5646-070CN - HP Left Door Assembly Includes Face-up Delivery Assembly for HP LaserJet 9000 / 9000 Multi Function Printer
SKU: RG5-5646-070CN
Price: $308.95
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.