The supported writing speeds for the Toshiba burner are given in the screenshot below:

The simulation test under Nero CD Speed confirmed the manufacturer's specifications and the drive finished the task reporting a maximum speed of 48.32X after 2:43 mins. The test started at 21.40X and had an average speed of 35.21X.

- CD-R Recording Times

We created an 80min data compilation with Nero Burning Rom and recorded it on a 700MB disc. The SD-R5372 was faster than the Plextor which supports the same speed. Pioneer lagged behind due to its 32X supported speed.

All tested media reported almost the same time with SKC media producing the lowest time.

- Other features

The Toshiba drive managed to overburn up to 95min.

- CD-RW Format

The drive supports 24X with the US-RW media.

Below you can see the Nero CD-DVD Speed writing simulation test with blank 24x US-RW media from Mitsubishi Chemicals.

According to Nero CDSpeed, the drive reached a maximum of 24.02X writing speed. The test started at 12X, while the average speed was 20.21X.

- CD-RW Mount Rainier

The drive doesn't support the Mount Rainier feature.