• EOL (End-of-life) replaced byHL23T-PLUS
  • Thunderbolt 3 interface with 40Gbps of throughput in both channels
  • Supports one PCIe (3.0 x 16) bandwidth up to 2750 MB/s
  • Supports USB 3.1 Gen 2 (10Gbps)
  • Built-in movable 8×8 cm speed-adjustable fan cooler
  • Internal Ultra-quiet 300W power supply

HL23T Thunderbolt™ 3 to Single PCIe Expansion Enclosure Product Description

Host Interface Thunderbolt 3 (Dual Port for Daisy Chain)
Data Transfer Rate 40Gbps
No. of PCIe Slots One PCIe 3.0 x16 (PCIe 3.0 x4 Electrical / Thunderbolt Spec)
Thunderbolt Expansion Up to Six Thunderbolt devices
LED Display for Enclosure Power On
Material Aluminum housing with solid metal structure
Power Supply Single 300W PSU (High-Efficiency & Low Noise)
Input: 90-230 VAC/50-60 HZ
Output: +5V and +12V
(With two PCIe 6+2 pin & one 4 Pin auxiliary power cable)
Dimension 371(D) x 110(W) x 200(H) mm
14.6 (D) x 4.3 (W) x 7.87 (H) inch
Cooling One Hot-Swappable 80 x80 x20 mm Cooling Fan
System Support MacBook Pro(2016) with a Thunderbolt 3 port

Note: Thunderbolt 2 Mac will request a Thunderbolt 3(USB-C) to Thunderbolt 2 adapter from Apple.

O.S. Support Mac OS X 10.12.3 above
PCIe card  Size Available Full length (320mm), full height (120mm) , double-width PCIe card
Storage Temperature 0 to 40°C  (32 to 104°F)
Operating Temperature -10 to 50°C  (-14 to 122°F)
Relative Humidity 20 to 80% (non-condensing)



The HL23T is the first in the Hercules™ series, the Netstor Hercules™ PCIe Expansion Enclosure is able to be installed with single-slot and double-width card to your Thunderbolt 3 host computers to bringing incredible power to your digital workflows.Suitable applications include High Performance Gaming, AR/VR content creation, video-editing and so forth.

Thunderbolt 3 (USB-C) 40Gbps Interface

Designed to feature Thunderbolt™ 3 interface (40Gb/s) capable of providing PCIe bandwidth up to 2750 MB/s, 2x times Thunderbolt 2, for diverse professional PCIe cards such as video transcoding and video capture that primarily require higher throughput of data transfer rate to the host computer.

Dual Thunderbolt 3 Ports – The USB C That Does It All

Through the dual Thunderbolt™ 3 (USB-C) ports, users can have the first port to computer while the second port to daisy-chain of up to five additional Thunderbolt peripheral devices with two 4K displays or one 5K display being positioned at the very end of the chain. USB 3.1 Gen 2 (10Gbps) is supported as well: connecting one USB device to the second port for application is applicable.

Cooling Where your Card Needs It Most

Built with one movable 8×8 cm speed-adjustable fan cooler at enclosure’s side, users can shift the cooler’s position at any time to have the best airflow ventilation to the video card based on each card’s length design and fan/blower location.

The 300W Industrial-Grade Power Supply

The built-in 300W industrial grade PSU definitely suits every end-users’ needs in the digital content workflow applications. The expansion enclosure includes two 6+2 pin auxiliary PCI-E power connectors that support professional cards requiring electric power up to 300 watts.


Mac certified. Works with All Series of Thunderbolt Mac

The Thunderbolt™ 3 HL23T single-slot PCIe expansion chassis has passed Apple’s strict certification test process and is Mac certified, which supports and works with all series of Thunderbolt Mac.

Host Support
Mac   MAC • Mac mini, iMac, MacBook Pro, MacBook Air
with a Thunderbolt port (Mac OS X 10.6.8+)
RAID Card Support
Areca   Areca • ARC-1882x        • ARC-1882LP
• ARC-1213-4x     • ARC-1223-8x
ATTO   ATTO • ExpressSAS R680 (version 2.0+)
HighPoint    HighPoint • RocketRAID 2722    • RocketRAID 3622
• RocketRAID 4522
Audio Card Support
AVID     AVID • Pro Tools HDX    • Pro Tools HD Native
(Tested by Netstor)
 Lynx     Lynx Studio • AES16e
 RME    RME • HDSPe MADI       • HDSPe AIO
• HDSPe AES         • HDSPe RayDAT
 Universal Audio    Universal Audio • UAD-2 DUO         • UAD-2 QUAD
(version 6.3.1+)
Video Card Support
 Black Magic Design BlackMagic  • DeckLink Studio   • DeckLink Quad   • Intensity Pro
• DeckLink HD 3D   • DeckLink 4K (version 9.5+)
 BluefishBluefish  • Create 3D Ultra    • Create 3D
• Create HD          • Epoch Supernova S+
 Matrox  Matrox  • Mojito MAX
 AJA  AJA  • Kona 3G            • Kona LHi       • Kona LHe Plus
(version 10.3+)
10G Networking Card
 MyricomMyricom • 10G-PCIE-8B-2C • 10G-PCIE-8B-2S • 10G-PCIE-8B-C
• 10G-PCIE-8B-S   • 10G-PCIE2-8B2-2C
• 10G-PCIE2-8B2-2S  (version v1.3.1+)

Enclosure x 1
Thunderbolt cable x 1 (2 meter)
Power Cord x 1

Model No. Description


Thunderbolt3 to PCIe Expansion Chassis, Supporting up to one(1) full-length, full-height, and double-width PCIe card, with bulit-in 300W single power supply and providing extra 6+2 pin PCIe power cable, One Thunderbolt 3, 1 meter cable.