Replacement for 3C16816: Drop-In Alternatives We Stock
Looking for a replacement for the 3C16816 (3C16816 - 3Com 4007 Layer 3 Switch Chassis 7 x Expansion Slot 12 x 10/100Base-TX LAN 20 x 100Base-FX LAN 3 x 10/100/1000Base-T)? 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 3C16816
| SKU | 3C16816 |
|---|---|
| Product | 3C16816 - 3Com 4007 Layer 3 Switch Chassis 7 x Expansion Slot 12 x 10/100Base-TX LAN 20 x 100Base-FX LAN 3 x 10/100/1000Base-T |
| Stock status | In Stock |
| Detail page | View 3C16816 › |
Drop-in replacements for 3C16816
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.
JC612AR - HP 10508 Switch Chassis Manageable 14 x Expansion Slots 14 x Expansion Slot DB-9 3 10 Gigabit Ethernet Layer Supported 14U High Rack-mountable Desktop (Re
SKU: JC612AR
Price: $684.21
JG619AR - HPE FlexFabric 12910 10 x Expansion Slot Layer-3 Managed Rack Mountable Switch AC Chassis
SKU: JG619AR
Price: $1,471.58
HPE JG619A#ACC FlexFabric 12910 10 x Expansion Slot Layer-3 Managed Rack Mountable Switch AC Chassis
SKU: JG619A-ACC
Price: $2,007.16
HPE JG619A#ABA FlexFabric 12910 10 x Expansion Slot Layer-3 Managed Rack Mountable Switch AC Chassis
SKU: JG619A-ABA
Price: $2,007.16
JG823AR - HP 10512 SFP Switch TAA-Compliant Chassis 18 Expansion Slot Manageable Optical Fiber Modular 3 Layer Supported 18U High Rack-mountable
SKU: JG823AR
Price: $6,842.11
JG823A - HP 10512 SFP Switch TAA-Compliant Chassis 18 Expansion Slot Manageable Optical Fiber Modular 3 Layer Supported 18U High Rack-mountable
SKU: JG823A
Price: $6,842.11
JG785A - HPE FlexFabric 12518E 10 x Ports Expansion Slot Layer 3 Managed Gigabit Ethernet Network Switch Chassis
SKU: JG785A
Price: $11,184.21
JG785AR - HPE FlexFabric 12518E 10 x Ports Expansion Slot Layer 3 Managed Gigabit Ethernet Network Switch Chassis
SKU: JG785AR
Price: $11,184.21
J8474-61201 - HP ProCurve 6410CL-6XG Switch 6 x Ports 10GBase-T Expansion Slot Layer-3 Managed 10 Gigabit Ethernet Network Switch
SKU: J8474-61201
Price: $278.95
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.