Replacement for 3CNJ1000-20: Drop-In Alternatives We Stock
Looking for a replacement for the 3CNJ1000-20 (3CNJ1000-20 - 3Com IntelliJack NJ1000 Gigabit Switch 4 x 10/100/1000Base-T LAN 1 x 10/100/1000Base-T Uplink)? 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 3CNJ1000-20
| SKU | 3CNJ1000-20 |
|---|---|
| Product | 3CNJ1000-20 - 3Com IntelliJack NJ1000 Gigabit Switch 4 x 10/100/1000Base-T LAN 1 x 10/100/1000Base-T Uplink |
| Stock status | In Stock |
| Detail page | View 3CNJ1000-20 › |
Drop-in replacements for 3CNJ1000-20
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.
NI-CES-2048CX-L3PREM-AC - Brocade NetIron CES-2048CX Compact Carrier Ethernet Switch 2 x XFP Uplink 48 x 10/100/1000Base-T LAN
SKU: NI-CES-2048CX-L3PREM-AC
Price: $722.55
MS120-48-HW - Cisco Meraki MS120-48 RJ-45 48 x Ports 10/100/1000Base-T + 4 x SFP Uplink Layer 2 Managed Gigabit Ethernet Compact Switch
SKU: MS120-48-HW
Price: $263.89
MS120-8LP-HW - Cisco Meraki MS120-8LP POE+ RJ-45 8 x Ports 10/100/1000Base-T + 2 x SFP Uplink Layer 2 Managed Gigabit Ethernet Compact Switch
SKU: MS120-8LP-HW
Price: $446.68
MS120-8-HW - Cisco Meraki MS120-8 RJ-45 8 x Ports 10/100/1000Base-T + 2 x SFP Uplink Layer 2 Managed Gigabit Ethernet Compact Switch
SKU: MS120-8-HW
Price: $1,509.50
HPE R8Q70A#ABA Aruba 6200M 48-Port PoE+ 10/100/1000Base-T Gigabit Ethernet RJ-45 4-Port 10GBase-X 10Gigabit Ethernet SFP+ Uplink Layer 3 Managed Stackable 1U Rack-mountable Network Switch
SKU: R8Q70A#ABA
Price: $4,713.68
MS120-24P-HW - Cisco Meraki MS120-24P RJ-45 POE 24 x Ports 10/100/1000Base-T + 4 x SFP Uplink Layer 2 Managed Gigabit Ethernet Compact Switch
SKU: MS120-24P-HW
Price: $5,525.86
HPE JL728B#ABA Aruba CX 6200F 48-Ports PoE+ 10/100/1000Base-T RJ-45 Gigabit Ethernet 4-Ports 10GBase-X Uplink SFP+ Layer 3 Managed 1U Rack-mountable Network Switch
SKU: JL728B#ABA
Price: $5,618.95
FGS624P - Brocade Fastiron Ethernet Switch 4 x SFP (mini-GBIC) Shared 1 x Expansion Slot 20 x 10/100/1000Base-T LAN 4 x 10/100/1000Base-T LAN
SKU: FGS624P
Price: $392.99
FGS624P-STK - Brocade Fastiron Stackable Ethernet Switch 4 x SFP (mini-GBIC) Shared 4 x 10/100/1000Base-T LAN 20 x 10/100/1000Base-T LAN
SKU: FGS624P-STK
Price: $392.99
FGS624P-POE - Brocade Fastiron 24-Port 20 x 10/100/1000Base-T LAN 4 x 10/100/1000Base-T LAN Ethernet Switch
SKU: FGS624P-POE
Price: $429.83
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.