If you’re comfortable opening your ROG Ally (it won’t void the warranty), we suggest considering buying an M.2 SSD instead and installing it, as it’s a better value in terms of storage, and ...

The Hyper M.2 x16 Card V2 PCIe add-on card only supports PCIe SSD cards, and supports RAID via VROC on Intel X299, Z370 and Z390 motherboards.

The newly revealed ASUS ROG Matrix GeForce RTX 4090 graphics card uses a liquid metal thermal compound on the GPU to help cool the chip. The card and GPU are also housed inside an all-metal frame.

TL;DR: The ASUS ROG Ally gaming handheld was upgraded with a 90Wh battery from the ROG Strix G15 laptop and a larger M.2 2280 SSD, extending battery life from 1.5 to 4 hours.

When teased in early May, it was speculated the ROG Strix SQ1 would employ Phison's PS5018-E18 controller (PCIe Gen 4x4), and a new product listing on ASUS's website confirms this to be the case.