Internal SAS SATA Interface Card Lenovo 4Y37A78601 PCIe 12 Gbit/s

The Lenovo 4Y37A78601 is an internal SAS/SATA interface card (HBA) for ThinkSystem servers that provides PCIe Gen4 connectivity and supports 12 Gbps SAS/SATA links. Available in 8‑lane and 16‑lane configurations (ThinkSystem 440‑8i and 440‑16i variants), the adapter is intended for internal storage connectivity and is passive cooled. It offers a PCIe host interface and is certified for use in USA, Canada and Taiwan.

Advantages

The adapter uses PCIe Gen4 to deliver increased host bandwidth and integrates current SAS enhancements to support 12 Gbps per lane connections. The product is available in two lane counts (8 or 16) to match different server and storage densities. Passive cooling reduces moving parts and can simplify deployment in compatible server models. The card supports both SAS and SATA drives, enabling mixed internal storage configurations.

Suitable for

• Internal server storage expansion in Lenovo ThinkSystem servers
• High‑density storage enclosures requiring multiple 12 Gbps SAS lanes
• Environments that mix SAS and SATA drives
• IT solutions where passive cooling is preferred

Key specifications

• Manufacturer: Lenovo
• Model / MPN: 4Y37A78601
• Interface to host: PCIe (Gen4)
• Output interfaces: SAS, SATA
• Data rate: 12 Gbit/s per SAS lane
• Lane configurations: 8‑lane (440‑8i) or 16‑lane (440‑16i) variants
• Cooling: Passive
• Certifications: USA, Canada, Taiwan

How to use

Install the card into a compatible PCIe slot in a ThinkSystem server following the server manufacturer’s hardware installation procedures. Connect internal SAS/SATA drive backplanes or cables to the card’s SAS/SATA ports according to the server design. Ensure server firmware and HBA drivers are updated to the versions recommended by Lenovo to enable full functionality and optimal performance.

Recommendations

Verify compatibility with your specific ThinkSystem server model and storage backplane before purchase. Choose the 8‑lane or 16‑lane variant based on the number of drives and required throughput. Use manufacturer‑provided drivers and firmware updates and follow server cooling guidelines to maintain passive‑cooled operation within specified thermal limits.