Replacement for J4858A: Drop-In Alternatives We Stock
Looking for a replacement for the J4858A (J4858A - HP ProCurve X121 GigaBit-SX-LC SFP Mini-GBIC 850nm Transceiver Module)? Pro Disk Network ships HP 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 J4858A
| SKU | J4858A |
|---|---|
| Product | J4858A - HP ProCurve X121 GigaBit-SX-LC SFP Mini-GBIC 850nm Transceiver Module |
| Current price | $128.42 |
| Stock status | In Stock |
| Detail page | View J4858A › |
Drop-in replacements for J4858A
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.
1005-0927 - HP ProCurve Gigabit-SX-LC 1000BaseSX Mini-GBIC 850nm SFP Transceiver Module
SKU: 1005-0927
Price: $98.59
J4858B-DDO - HP ProCurve X121 GigaBit-SX-LC SFP Mini-GBIC 850nm Transceiver Module
SKU: J4858B-DDO
Price: $115.79
J4858B-AO - AddOn HP ProCurve Gigabit-SX-LC 1000Base-SX Mini-GBIC 850nm SFP Transceiver Module
SKU: J4858B-AO
Price: $115.79
J4858C-AS - Agilestar HP ProCurve Gigabit-SX-LC 1000Base-SX Mini-GBIC 850nm SFP Transceiver Module
SKU: J4858C-AS
Price: $206.34
J4857-61001 - HP ProCurve Mini-GBIC Redundant Management Module 8 x SFP (mini-GBIC) Management Module
SKU: J4857-61001
Price: $149.47
J4857A - HP ProCurve Mini-GBIC Redundant Management Module 8 x SFP (mini-GBIC) Management Module
SKU: J4857A
Price: $149.47
J4856A - HP ProCurve Mini-GBIC Expansion Module 8 x SFP (mini-GBIC) Expansion Module
SKU: J4856A
Price: $1,365.62
J4857-69101 - HP ProCurve Mini-GBIC Redundant Management Module 8 x SFP (mini-GBIC) Management Module
SKU: J4857-69101
Price: $1,786.11
J4857-69001 - HP ProCurve Mini-GBIC Redundant Management Module 8 x SFP (mini-GBIC) Management Module
SKU: J4857-69001
Price: $1,786.11
J4858C-CDW - AddOn HP ProCurve 1Gbps 1000Base-SX Multi-Mode Fibre 550m 850nm Duplex LC Connector SFP (Mini-GBIC) Transceiver Module
SKU: J4858C-CDW
Price: $75.47
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.