{"product_id":"iceriver-ks5l-ks5m-control-board","title":"Iceriver KS5L KS5M Control Board ASIC Motherboard with Square Fan Connector","description":"\u003ch2\u003eIceriver KS5L \/ KS5M Control Board | Brand-New ASIC Motherboard with 4p Square Fan Connector\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eIceriver KS5L \/ KS5M Control Board\u003c\/strong\u003e is the \u003cstrong\u003ebrand-new replacement motherboard\u003c\/strong\u003e for the \u003cstrong\u003eIceriver KS5L and KS5M Kaspa miners\u003c\/strong\u003e that ship with the \u003cstrong\u003e4-pin square 5557 fan connector\u003c\/strong\u003e. Drop-in fix when the original control board fails — restores miner operation and clears IP \/ backstage \/ hashboard-detection faults that take the unit offline.\u003c\/p\u003e\n\u003cp\u003eCritical compatibility note: there are \u003cstrong\u003etwo physical revisions\u003c\/strong\u003e of the Iceriver KS5 control board — one with the \u003cstrong\u003e4-pin square 5557 fan connector\u003c\/strong\u003e (this product) and one with the \u003cstrong\u003e4-pin linear fan connector\u003c\/strong\u003e (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.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace the Iceriver KS5L \/ KS5M Control Board\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMiner doesn't get an IP address\u003c\/strong\u003e on the LAN — Ethernet PHY or boot stage on the controller failed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackstage \/ web UI unreachable\u003c\/strong\u003e with confirmed network link — CPU or storage on the control board hung.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHashboards not detected\u003c\/strong\u003e in the dashboard while confirmed healthy on a tester fixture — I²C \/ SPI bus failure on the controller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMiner stuck in boot loop\u003c\/strong\u003e — LEDs cycle but OS doesn't come up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible damage\u003c\/strong\u003e — burn marks, swollen capacitors, surge damage to the network or fan port.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eIceriver KS5L \/ KS5M Control Board Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eIceriver KS5L, KS5M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan Connector Type\u003c\/td\u003e\n\u003ctd\u003eSquare 5557 4-pin (verify against miner)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eReplacement control board \/ ASIC motherboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolves\u003c\/td\u003e\n\u003ctd\u003eIP detection, backstage access, hashboard recognition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVariants\u003c\/td\u003e\n\u003ctd\u003eKS5L, KS5M (select at checkout)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eDrop-in \/ plug-and-play once correct revision confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB\u003c\/td\u003e\n\u003ctd\u003eRigid green substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Support\u003c\/td\u003e\n\u003ctd\u003e4-pin PWM fan control via square connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eBrand New \/ Original\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eFAQ — Iceriver KS5L \/ KS5M Control Board\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I tell which fan connector revision my miner has?\u003c\/strong\u003e\u003cbr\u003eA: 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 \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for confirmation before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the linear-fan board work as a substitute if I can't find the square version?\u003c\/strong\u003e\u003cbr\u003eA: 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the replacement come pre-flashed with firmware?\u003c\/strong\u003e\u003cbr\u003eA: Standard Iceriver firmware. Re-flash to the latest stable release after installation for best stability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing for repair shops?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e with your typical monthly volume and we'll send tier pricing.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/iceriver-ks3m-miner-original-replacement-control-board-cryptominer-repair\"\u003eIceriver KS1–KS3M Control Board (linear fan version)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/iceriver-ks-series-tester-hashboard-ks3-ks3m-ks3l\"\u003eIceriver KS Universal Hashboard Tester\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/iceriver-ks5l-1004lv100-asic-chip-tin-stencil-plate-hash-board-repair\"\u003eIceriver KS5L 1004LV100 ASIC Chip Tin Stencil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/iceriver-ks5-ks5pro-4pin-fan-speed-simulator-water-hydro-oil-cooling\"\u003eIceriver KS5 \/ KS5Pro 4-pin Fan Speed Simulator\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRepair shops stocking KS5L \/ KS5M control boards by the case? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"KS5M","offer_id":44081894359219,"sku":null,"price":104.9,"currency_code":"USD","in_stock":true},{"title":"KS5L","offer_id":44081894391987,"sku":null,"price":104.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/Brand-New-Iceriver-KS5L-KS5M-Control-Board-ASIC-Motherboard-Square-Fan-Connector_2.webp?v=1744429611","url":"https:\/\/lys-sz.com\/products\/iceriver-ks5l-ks5m-control-board","provider":"LYS Shenzhen","version":"1.0","type":"link"}