Replacement for VG400-4FXS-4FXO: Drop-In Alternatives We Stock
Looking for a replacement for the VG400-4FXS-4FXO (Cisco Systems VG400-4FXS/4FXO VG400 RJ-11 4 Ports 1000Base-T Analog Voice VoIP Gateway)? 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 VG400-4FXS-4FXO
| SKU | VG400-4FXS-4FXO |
|---|---|
| Product | Cisco Systems VG400-4FXS/4FXO VG400 RJ-11 4 Ports 1000Base-T Analog Voice VoIP Gateway |
| Stock status | In Stock |
| Detail page | View VG400-4FXS-4FXO › |
Drop-in replacements for VG400-4FXS-4FXO
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 CP-7925G-EX-K9 7925G-EX IP Phone Wireless 6 x Total Line VoIP IEEE 802.11a/b/g Caller ID USB
SKU: CP-7925G-EX-K9
Price: $1,314.68
AIR-LAP1131AG-A-K9-06 - Cisco Systems Aironet 1131AG 802.11a/b/g Wireless Access Point
SKU: AIR-LAP1131AG-A-K9-06
Price: $93.62
ISR1100-6G - Cisco ISR1100 Router 4 GE LAN/WAN Ports and 2 SFP ports 4GB RAM
SKU: ISR1100-6G
Price: $6,579.50
00Y3250 - IBM CISCO CATALYST 3110X Switch - 14 Ports - L3 - MANAGED - STACKABLE
SKU: 00Y3250
Price: $142.11
641146-B21 - HP Cisco B22HP Fabric Extender - Expansion Module - 16 Ports
SKU: 641146-B21
Price: $163.16
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.