QNAP QXP-1630S-3816 Quad-Port SAS 12Gb/s PCIe 4.0 Host Bus Adapter
Overview
The QXP-1630S-3816 is a PCIe 4.0 x8 host bus adapter built to scale raw storage capacity on compatible QNAP NAS systems by connecting external TL-series SAS JBOD enclosures. Powered by the Broadcom Aero SAS3816 chipset, it delivers four external SAS 12Gb/s ports — enough aggregate bandwidth to prevent the expansion shelf from becoming a bottleneck in high-throughput recording or archive workflows. Maximum addressable capacity reaches 4.6PB, making the QXP-1630S-3816 a practical fit for multi-enclosure builds where a single NAS chassis has exhausted its native bay count. The PCIe Gen 4 interface and reduced form factor compared to its predecessor means it installs in a broader range of QNAP NAS PCIe slots without requiring the largest chassis in the lineup.
Compatibility
This card is designed for use with QNAP NAS storage systems that expose a PCIe 4.0 x8 (or compatible) slot for expansion cards. It connects to QNAP TL-series SAS JBOD enclosures — the intended downstream devices. Confirm your specific NAS model's PCIe slot availability and slot generation before ordering; PCIe 4.0 x8 physical fitment is required for full-bandwidth operation. The smaller form factor broadens slot compatibility versus the prior-generation QXP card, but verify your NAS model's expansion card compatibility list on QNAP's hardware compatibility pages. Not intended for use with non-QNAP hosts or third-party JBOD shelves without independent validation.
Installation Notes
Install into a free PCIe 4.0 x8 slot inside the NAS chassis with the unit powered off. SAS 12Gb/s cabling (SFF-8644 or SFF-8088 depending on enclosure port type) connects the card's external ports to the TL-series JBOD. Verify QTS or QuTS hero firmware supports the QXP-1630S-3816 before deployment — check QNAP's compatibility notes for your NAS model and OS version. Port configuration is flexible, so multi-enclosure daisy-chain or direct per-enclosure wiring is possible depending on JBOD model and cabling topology.
