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4-Port 3Gb/s eSATA PCI-X Host Adapter

Mac / PC / eSATA / PCI-X
Connect Up to 20 Drives
Improve your PCI-X System
The SeriTek/2SE4 is compatible with PCI-X bus architecture systems like Apple's Macintosh G5. The FirmTek SeriTek/2SE4 is the only port multiplier compatible SATA controller card that offers Macintosh boot capability, allowing the fastest RAID configurations to include system operations. Four hot-swappable external SATA II ports enable individual drives or RAID arrays via built-in OS RAID 0/1 software.
Supports Port Multiplication
The port multiplier technology included in the SeriTek/2SE4 allows each physical eSATA port to access multiple devices at full speed via port multiplier enclosures like FirmTek's SeriTek/5PM. A single eSATA data cable connects the computer with up to five hard drives (previous technology required a separate cable for each external SATA drive). The SeriTek/2SE4 can dramatically increase on-hand high-performance data storage. With up to 20 RAID-configured hard drives connected simultaneously, accessible storage limits can be effectively eliminated for all but the most demanding applications. In addition, port multiplication also delivers significantly less cable clutter.
Achieve Faster Data Transfers
SeriTek/2SE4 optimizes performance for up to 5 hard drives per data port by utilizing the advanced bandwidth characteristics of the PCI-X architecture. When 20 high performance hard drives are configured in a RAID array, throughput can reach beyond 700Mb/sec, enabling up to four simultaneous HD video streams to be streamed directly to disk.

Product Specifications:

FirmTek Part Number

  • SATA2SE4


  • 4 x External SATA 3Gb/s Ports


  • External - 20 Devices1

Bus Specifications

  • 32-bit PCI bus version 2.2

Form Factor

  • Standard PCI

RAID Functionality

  • Native OS X RAID 0/1

Operating System Support

  • Mac OS X 10.4.11 - 10.5.x
  • Windows 7, Vista, XP

Power Requirements

  • 5V ± 5%

External Connectivity

  • x4 eSATA connector

Internal Connectivity

  • None

Drive Types Supported

  • Serial ATA hard drive
  • Backward compatible with Ultra DMA 133/100/66 hard drives2

Advanced Data Features

  • Fully compliant with Serial ATA 1.0a specification
  • Port multiplier support: Run up to 20 drives via SeriTek/5PM or enclosure supports Port Multiplier
  • Self-contained Macintosh booting functionality
  • Bus Mastering off-loads data I/O handling from CPU
  • Complete 32-bit CRC error checking, for all bits transmitted (command, data, and status), offers enhanced data protection for high-speed Serial ATA drives
  • Four independent data channels allows for separate device timings
  • Automatically identifies and configures drive types
  • Automatically detects and supports devices utilizing many transfer modes including UltraDMA 6/5/43/2/1/01


  • EN55022/1998, EN55024/1998 (European Community)
  • FCC Part 15 Class B (US)
  • RoHS Compliant


  • Operating: +5°C to +55°C
  • Non-Operating: -25°C to +70°C

Relative Humidity

  • Operating: 20% to 80%
  • Non-Operating: 15% to 90%


  • 6.4" x 0.06" x 3.88" ( 163.1 x 1.6 x 98.64 mm)


  • 3.7oz (105g)


  1. Support for up to 20 drives requires an external enclosure built with a 5-port Port Multiplier like the FirmTek SeriTek/5PM. Use of enclosures without port multiplication, like SeriTek/2eEN4, will support up to 4 drives; each directly connected to a SeriTek/2SE4 port.
  2. IDE to Serial ATA converter module required for Parallel ATA and Ultra ATA133/100/66 drives
  3. Measurements do not include bracket.
Manufacturer provided specifications for Firmtek p/n SATA2SE4
This product is compatible with... Learn how to find your Mac's model ID
PowerMac G5
Power Mac G5 (Early 2005)
(April, 2005)
Model ID: PowerMac7,2
dual 2.0GHz
PowerMac G5
Power Mac G5 (Early 2005)
(April, 2005)
Model ID: PowerMac7,3
dual 2.3GHz, dual 2.7GHz
PowerMac G5
Power Mac G5 (Late 2004)
(October, 2004)
Model ID: PowerMac9,1
PowerMac G5
Power Mac G5 (June 2004)
(June, 2004)
Model ID: PowerMac7,3
dual 1.8GHz, dual 2.0GHz, dual 2.5GHz
PowerMac G5
Power Mac G5
(June, 2003)
Model ID: PowerMac7,2
1.6GHz, 1.8GHz, dual 1.8GHz, dual 2.0GHz


FirmTek SeriTek/2SE4 4-Port 3Gb/s eSATA PCI-X Host Adapter Mfr P/N: SATA2SE4 OWC SKU: FTKSATA2SE4 4-Port External PCI-X Host Adapter W/ Port Multiplier for up to 20 Drives (Not for Dual Core G5 systems). Firmtek 1 Year Limited Warranty
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