Replacement for 3C16816-US: Drop-In Alternatives We Stock
Looking for a replacement for the 3C16816-US (3C16816-US - 3Com 4007 Layer 3 Switch Chassis 4 x Expansion Slot, 3 x Expansion Slot Switch Chassis)? 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-US
| SKU | 3C16816-US |
|---|---|
| Product | 3C16816-US - 3Com 4007 Layer 3 Switch Chassis 4 x Expansion Slot, 3 x Expansion Slot Switch Chassis |
| Stock status | In Stock |
| Detail page | View 3C16816-US › |
Drop-in replacements for 3C16816-US
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.
EX4500-40F-VC1-DC - Juniper Network Switch Chassis 43 Slot x No 40 x SFP+ 2 x Expansion Slot 1 x Stacking Module Slot
SKU: EX4500-40F-VC1-DC
Price: $393.42
EX8208-DENSE-BNDL - Juniper EX8208 Network Switch Chassis 8 Slot x No 8 x Expansion Slot Slot
SKU: EX8208-DENSE-BNDL
Price: $3,288.16
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
J4850A - HP ProCurve Switch 5304XL 4 x Expansion Slot 10/100Base-TX Layer- 3 Managed Ethernet Network Switch Chassis
SKU: J4850A
Price: $128.42
HP J4850A#ABB ProCurve Switch 5304XL 4 x Expansion Slot 10/100Base-TX Layer- 3 Managed Ethernet Network Switch Chassis
SKU: J4850A-ABB
Price: $250.53
HP J4850A#ACC ProCurve Switch 5304XL 4 x Expansion Slot 10/100Base-TX Layer- 3 Managed Ethernet Network Switch Chassis
SKU: J4850A-ACC
Price: $250.53
FS-248B-G - Fortinet Forti Switch 248B Layer 3 Switch 50-Port 1 Slot 48 2 x 10/100/1000Base-T 1 x Expansion Slot 10/100/1000Base-T x
SKU: FS-248B-G
Price: $1,644.74
DGS-1510-28 - D-Link SmartPro Ethernet Switch 28 Network 2 Expansion Slot 2 Expansion Slot Manageable Twisted Pair Optical Fiber
SKU: DGS-1510-28
Price: $571.68
EX4500-40F-BF - Juniper Network Switch Chassis 42 Slot 40 x SFP+ 2 x Expansion Slot
SKU: EX4500-40F-BF
Price: $393.42
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.