The Targa’s Series 4 Gigabit (Gb) Ethernet, Network Attached Storage (NAS), Data Transfer System (DTS) provides a compact self-contained system to store and retrieve data from a removable Serial ATA (SATA) flash disk in the most demanding environments.

The data transfer system components are; a Data Transfer Unit (DTU), removable Data Transfer Device (DTD) and Ground Support Unit (GSU).

Here I’m attaching PDFlink of data transfer unit aviation manual:
.targasystems.com/pdf/AR-Targa-AP_S4-DTU-NAS_2-16_rev3.pdf

Features

Small, lightweight, (5 pounds) rugged unit providing reliable removable data storage
Interfaces: two (2) - 10/100/1000 Ethernet IEEE 802.3ab ports
Network Capture Capability (Netcapture)
Data Transfer Rates:
FTP Read: 100MBytes/sec
FTP Write: 50MBytes/sec

Network Bridge between the two ethernet ports via packet forwarding

FTP Read
Single or dual removable disk (DTD) units

Configurable:
Simultaneous NAS & iSCSI operations
Network Bridge between the two ethernet ports via packet forwarding
Locking access door with door open detect & DTD power shutdown

LED Status Indicator available
Input Power: +28 VDC (15 watts max in Single-DTD unit)
Mounting: CDU style panel mount (Dzus rail) per MS25212C

DTD:
Capacities: 60GBytes to 960GBytes
Up to 2 TB in Dual-DTD unit
Write protect and secure erase features
High reliability connector rated at 100,000 insertion/removals

Contact to:

L-3 Targa Systems
A Division of L-3 Aviation Products
Ottawa, Ontario, Canada
Tel: 613.727.9876