Confirm the physical connection first
Use the data USB-C connection identified by the manufacturer, not Aero’s red POWER port. Record any adapter between the drive and box. The existence of a USB-C connector does not mean that every port on this device performs the same role.
Manhattan also notes that a high-capacity hard drive can need its own power supply if the box’s USB port cannot supply enough. If the drive does not appear at all, keep that recognition problem separate from one particular video failing after the drive has already been listed.
Inspect the existing partition arrangement
The current Aero USB help recommends exFAT with MBR partitioning, says FAT32 and NTFS also work but can load more slowly, and excludes GUID/GPT. Check the existing filesystem and partition map on a computer before deciding that the media extension is the cause.
Do not format the only copy of a drive simply to try a setting. Preserve its files and understand the effect of any partition or format change first. If you already have a spare drive with a supported arrangement, a small authorised media sample can provide a cleaner comparison without altering the original collection.
Separate scanning from decoding
Manhattan warns that drives containing many small documents or photos can take longer to scan, and lists supported media containers separately. A slow scan, an unrecognised partition and a recognised file that cannot play are different observations.
For support, record the port, adapter, drive power arrangement, filesystem, partition map and whether Media Player lists any files. Include the specific media filename extension only after that earlier recognition stage is established. Those details help the manufacturer distinguish a storage-path problem from the codec or content inside an otherwise accessible video file.