Replacement for SM978A: Drop-In Alternatives We Stock
Looking for a replacement for the SM978A (SM978A - Black Box 10GBase-T AC Adapter 4 x Ports Layer-2 Managed Gigabit Ethernet Network 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 SM978A
| SKU | SM978A |
|---|---|
| Product | SM978A - Black Box 10GBase-T AC Adapter 4 x Ports Layer-2 Managed Gigabit Ethernet Network Switch |
| Stock status | In Stock |
| Detail page | View SM978A › |
Drop-in replacements for SM978A
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.
Black LPB5052A Black Box LPB5052A LPB5000 48x Ports PoE+ 1GBase-T 4x Ports Combo SFP+ Layer 2+ Managed Rack-Mountable Gigabit Ethernet Network Switch
SKU: LPB5052A
Price: $2,815.79
Black LGB6050A Black Box LGB6050A 48x Ports 1GBase-T 4x Ports Shared SFP 1U Rack-mountable Layer 3 Managed Gigabit Ethernet Network Switch
SKU: LGB6050A
Price: $4,121.05
Black LGB2126A Black Box LGB2126A LGB2000 Series 24 x Ports 1GBase-T + 2 x Ports SFP (mini-GBIC) Layer 2 1U Rack-Mountable Gigabit Ethernet Network Switch
SKU: LGB2126A
Price: $387.37
LPJ001A-T-R2 - Black Box 1Gb/s 10/100/1000Base-T PoE+ 2 x Ports Layer-2 Managed Gigabit Ethernet
SKU: LPJ001A-T-R2
Price: $163.16
LBH3050A - Black Box Corporation 10/100Base-T/ 10/100/1000Base-T 5 x Ports Layer-2 Managed Gigabit Ethernet Network Switch
SKU: LBH3050A
Price: $197.89
LGH008A - Black Box Corporation 10/100/1000Base-T 8 x Ports Layer-2 Managed Gigabit Ethernet Network Switch
SKU: LGH008A
Price: $355.79
JPM820A - Black Box 1Gb/s 10/100/1000Base-T 48 x Ports Layer-2 Managed Gigabit Ethernet Switch
SKU: JPM820A
Price: $591.58
LGB1126A-R2 - Black Box 1Gb/s 10/100/1000Base-T/1000Base-X 26 x Ports Layer-2 Managed Gigabit Ethernet Switch
SKU: LGB1126A-R2
Price: $612.63
JPM385A - Black Box 1Gb/s 10/100/1000Base-T 24 x Ports Layer-2 Managed Gigabit Ethernet Switch
SKU: JPM385A
Price: $892.63
JSM114A - Black Box 24 x Ports 10/100Base-T/ 1000Base-T Layer-2 Managed Gigabit Ethernet Switch
SKU: JSM114A
Price: $1,069.89
DCX3000-DVR - Black Box Corporation 10/100/1000Base-T 6 x Ports Layer-2 Managed Gigabit Ethernet Network Switch
SKU: DCX3000-DVR
Price: $1,096.42
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.