Replacement for 3C16940A: Drop-In Alternatives We Stock
Looking for a replacement for the 3C16940A (3C16940A - 3Com SuperStack II Link 5-Port External 3000 Ethernet Switch)? 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 3C16940A
| SKU | 3C16940A |
|---|---|
| Product | 3C16940A - 3Com SuperStack II Link 5-Port External 3000 Ethernet Switch |
| Current price | $171.92 |
| Stock status | In Stock |
| Detail page | View 3C16940A › |
Drop-in replacements for 3C16940A
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.
Cisco IEM-3000-8TM Industrial Ethernet 3000 Series RJ-45 8 x Ports 10/100Base-TX + 2 x combo Gigabit SFP Layer 2 managed DIN rail mountable Fast Ethernet Switch Spare
SKU: IEM-3000-8TM
Price: $1,304.68
IE-3000-8TC-E - Cisco Industrial Ethernet 3000 Series RJ-45 8 x Ports 10/100Base-TX + 2 x combo Gigabit SFP Layer 2 managed DIN rail mountable Fast Ethernet Switch
SKU: IE-3000-8TC-E
Price: $2,209.05
IE-3000-8TC-RF - Cisco Industrial Ethernet 3000 Series RJ-45 8 x Ports 10/100Base-TX + 2 x combo Gigabit SFP Layer 2+ managed DIN rail mountable Fast Ethernet Switch
SKU: IE-3000-8TC-RF
Price: $2,565.00
IE-3000-8TC - Cisco Industrial Ethernet 3000 Series RJ-45 8 x Ports 10/100Base-TX + 2 x combo Gigabit SFP Layer 2 managed DIN rail mountable Fast Ethernet Switch
SKU: IE-3000-8TC
Price: $4,097.43
TP-LINK TP-LINK LS1005G TP-Link LS1005G LiteWave 5-Port 10/100/1000Mbps Desktop Gigabit Ethernet Network Switch
SKU: TP-LINK LS1005G
Price: $70.13
D-Link D-Link DGS-1510-52X D-Link DGS-1510-52X 44.2W 48-Port 10/100/1000Base-T Layer-3 Managed Gigabit Ethernet Switch with 4 10-Gigabit SFP+ Ports Rack-Mountable
SKU: D-LINK DGS-1510-52X
Price: $1,019.61
TP-LINK TP-LINK TL-SG1210P TP-Link TL-SG1210P 10-Port Gigabit Desktop Switch with 8-Port PoE+
SKU: TP-LINK TL-SG1210P
Price: $185.58
42T4725 - Lenovo 6-Cell 4400mAh 11.1V 49Wh Li-Ion Battery for Notebook 3000-G430 / 3000 B550 / 3000-G450
SKU: 42T4725
Price: $91.82
3C17206 - 3Com SuperStack 3 24-Ports 100Mbps 4400SE External Ethernet Switch
SKU: 3C17206
Price: $78.00
3C16985 - 3Com SuperStack II 24-Ports 100Mbps External Fast Ethernet Switch
SKU: 3C16985
Price: $102.32
3C16464B - 3Com SuperStack 3 12-Ports 10/100Mbps External BaseLine Ethernet Switch
SKU: 3C16464B
Price: $241.45
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.