Product Overview
The Dell EMC 303-391-000A is a PCB TLA RockslideX Four-Port 10GBASE-T I/O Module designed for the Dell EMC Unity All Flash and Unity Hybrid storage platform. This SLIC (Storage Line Interface Card) expansion module delivers four copper RJ45 Ethernet ports running at 10GbE speeds, enabling flexible and high-bandwidth front-end host connectivity over standard Cat6 copper cabling. The module supports both IP (NAS/file) and iSCSI (block) protocols simultaneously on the same card, making it a versatile addition for unified storage environments. It is an ideal choice for B2B enterprise environments requiring high-throughput NAS, iSCSI SAN, or mixed-workload connectivity without the need for optical transceivers.
Key Specifications
| Part Number | 303-391-000A |
| OEM / Manufacturer | Dell EMC |
| Description | PCB TLA RockslideX 4-Port 10GBase-T I/O Module (SLIC) |
| Port Count | 4 x 10GBASE-T (RJ45) |
| Interface / Speed | 10 Gigabit Ethernet (10GbE) — copper RJ45 |
| Protocol Support | IP (NAS/File: NFS, SMB/CIFS) and iSCSI (Block) — simultaneous dual-protocol |
| Form Factor | SLIC I/O Module (hot-swappable) |
| Cabling | Cat5e / Cat6 copper |
| Compatibility | Dell EMC Unity 300 / 300F / 350F / 380 / 380F, Unity 400 / 400F / 450F, Unity 500 / 500F / 550F, Unity 600 / 600F / 650F, Unity XT 480 / 480F / 680 / 680F / 880 / 880F |
| Condition | Refurbished — Tested & Inspected |
Condition & Warranty
This unit is sold as professionally refurbished enterprise-grade hardware. Each module has been fully inspected, powered on, and functionally tested prior to listing. Units are cleaned and verified to meet OEM operational standards. A 90-day warranty against defects in materials and workmanship is included. Sold without original retail packaging. No SFPs or accessories are included unless explicitly stated. This is a genuine OEM Dell EMC component — not an aftermarket or clone part.