Iceriver KS5L KS5M Control Board ASIC Motherboard with Square Fan Connector
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Iceriver KS5L / KS5M Control Board | Brand-New ASIC Motherboard with 4p Square Fan Connector
The Iceriver KS5L / KS5M Control Board is the brand-new replacement motherboard for the Iceriver KS5L and KS5M Kaspa miners that ship with the 4-pin square 5557 fan connector. Drop-in fix when the original control board fails — restores miner operation and clears IP / backstage / hashboard-detection faults that take the unit offline.
Critical compatibility note: there are two physical revisions of the Iceriver KS5 control board — one with the 4-pin square 5557 fan connector (this product) and one with the 4-pin linear fan connector (a separate listing). Verify which connector your miner uses by inspecting the fan harness before ordering — installing the wrong revision will leave the fans inoperative even if the rest of the miner boots.
When to Replace the Iceriver KS5L / KS5M Control Board
- Miner doesn't get an IP address on the LAN — Ethernet PHY or boot stage on the controller failed.
- Backstage / web UI unreachable with confirmed network link — CPU or storage on the control board hung.
- Hashboards not detected in the dashboard while confirmed healthy on a tester fixture — I²C / SPI bus failure on the controller.
- Miner stuck in boot loop — LEDs cycle but OS doesn't come up.
- Visible damage — burn marks, swollen capacitors, surge damage to the network or fan port.
Iceriver KS5L / KS5M Control Board Specifications
| Feature | Specification |
|---|---|
| Compatibility | Iceriver KS5L, KS5M |
| Fan Connector Type | Square 5557 4-pin (verify against miner) |
| Function | Replacement control board / ASIC motherboard |
| Resolves | IP detection, backstage access, hashboard recognition |
| Variants | KS5L, KS5M (select at checkout) |
| Installation | Drop-in / plug-and-play once correct revision confirmed |
| PCB | Rigid green substrate |
| Cooling Support | 4-pin PWM fan control via square connector |
| Condition | Brand New / Original |
FAQ — Iceriver KS5L / KS5M Control Board
Q: How do I tell which fan connector revision my miner has?
A: Open the chassis and inspect the fan harness — square (4-pin Molex 5557 style) versus linear (4-pin inline). The harness is the easiest visual check. If you're not sure, photograph the connector and email contact@lys-sz.com for confirmation before ordering.
Q: Will the linear-fan board work as a substitute if I can't find the square version?
A: No — the connector pinout and physical fitment are different. You'd need to also swap the fan harness, which usually isn't practical at the bench. Source the correct revision instead.
Q: Does the replacement come pre-flashed with firmware?
A: Standard Iceriver firmware. Re-flash to the latest stable release after installation for best stability.
Q: Bulk pricing for repair shops?
A: Yes — email contact@lys-sz.com with your typical monthly volume and we'll send tier pricing.
Related products
- Iceriver KS1–KS3M Control Board (linear fan version)
- Iceriver KS Universal Hashboard Tester
- Iceriver KS5L 1004LV100 ASIC Chip Tin Stencil
- Iceriver KS5 / KS5Pro 4-pin Fan Speed Simulator
Repair shops stocking KS5L / KS5M control boards by the case? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
