Sirui SSD Mount Bracket AM-ST9 - Secure SSD Holder with Cable Clamp

In this review the Sirui AM-ST9 SSD Mount Bracket is evaluated as a simple, robust solution for photographers and videographers who need to attach a portable SSD to a camera cage or rig. Its single biggest reason to buy is the combination of a controlled knob locking system and an adjustable USB-C cable clamp, which together protect the drive while keeping the cable seated for reliable data transfer during recording. The bracket is especially useful for owners of Samsung T7/T5, SanDisk Extreme portable drives, and similar compact SSDs who want a low-weight, vibration-damping mount.

Key Features

• Universal fit: The adjustable range from 1.42in to 2.60in (36-66mm) fits most mainstream portable SSDs so users do not need different brackets for different brands.
• Knob locking: The innovative knob locking mechanism lets you control clamping force to protect the SSD from excessive pressure or slipping, unlike spring clamps.
• Adjustable cable clamp: A two-knob cable clamp slides and locks along a slot to align with different USB-C port positions and secures the cable for stable data transfer while recording.
• Flexible mounting: A detachable cold shoe can be fitted on the bottom or side, or removed to use the 1/4in-20 screw mount for direct cage or camera attachment.
• Build and protection: CNC-cut aluminum with a black anodized finish keeps the bracket light and durable, while rubber padding absorbs vibration and prevents scratches.

Who It's For

This mount is aimed at camera operators who record externally to portable SSDs and need a compact, secure way to attach drives to a cage or camera such as the BMPCC 4K/6K, Z Cam E2, or Sigma fp. It benefits users who prioritize protecting their SSD and cable connection while on location or during run-and-gun shoots.

Those who should look elsewhere include users who need internal drive bays, full-size desktop SSD mounts, or an all-in-one dock with power delivery; this bracket is strictly an external mounting and cable-clamp solution for portable SSDs.

Pros & Cons

Pros

• Secure, adjustable knob locking protects the SSD by letting users control clamping force.
• Detachable cold shoe and 1/4in-20 screw mounting provide flexible installation on cages and cameras.
• Lightweight CNC aluminum construction with rubber pads reduces vibration and prevents scratches.
• Adjustable cable clamp aligns with different USB-C port positions for reliable connections.

Cons

• Not intended for internal mounting or full-size drives; designed for compact portable SSDs only.
• Small parts and knobs may be easy to misplace if not stored carefully when not mounted.

Specifications

Model	SIRUI AM-ST9
Adjustable range	1.42in - 2.60in (36 - 66mm)
Mounting options	Detachable cold shoe; 1/4in-20 screw
Cable clamp	Adjustable USB-C clamp with two screw knobs
Construction	CNC-cut aluminum, black anodized
Weight	0.3 lbs (130 g)
Protection	Soft rubber pads at all contact points

Our Verdict

The Sirui AM-ST9 SSD Mount Bracket is a practical, well-made accessory for content creators who use portable SSDs for camera recording. Its knob locking and adjustable cable clamp meaningfully reduce risk of drive damage and dropped connections, while the lightweight CNC body and rubber padding make it a durable, low-bulk choice. For anyone mounting Samsung T7/T5 or similar portable SSDs to a cage or compatible camera, it is a good value and a sensible improvement over generic spring-clamp holders.

Frequently Asked Questions

Will this fit Samsung T7 and T5 drives?
Yes. The adjustable range of 1.42in to 2.60in (36-66mm) is designed to fit Samsung T7 and T5 portable SSDs and similar models.

Can it be mounted directly to a camera?
Yes. The bracket can be mounted via the detachable cold shoe or removed to attach using a 1/4in-20 screw to a cage or camera.

How does the cable clamp help?
The two-knob cable clamp slides to line up with different USB-C port locations and secures the cable so data connections remain stable during recording.