SanDisk
Prices
SanDisk Professional PRO G40
9 offers at 5 retailers · from $389 (1TB at SanDisk Direct)
Score 7.8 · Great for Thunderbolt / USB4
3,000 read · 2,500 write MB/s
External
Thunderbolt 3 (40 Gbps)
Cache not disclosed
5-year warranty
Passive Cooling
Ships macOS-formatted — reformat to use with Windows.
Read the buyer guide ↗1TB
Best:
$389 at SanDisk Direct
· $0.389/GB
Retailer
Price
$/GB
Stock
Checked
Current $
B&H
Discontinued
Nov 2, 2026
2TB
Best:
$519 at SanDisk Direct
· $0.260/GB
Retailer
Price
$/GB
Stock
Checked
Current $
B&H
Out of Stock
Nov 2, 2026
4TB
Retailer
Price
$/GB
Stock
Checked
Current $
Amazon
Out of Stock
Nov 2, 2026
B&H
Discontinued
Nov 2, 2026
Best Buy
Out of Stock
Oct 28, 2026
Newegg
Out of Stock
Oct 28, 2026
SanDisk Direct
Out of Stock
Nov 2, 2026
Walmart
Out of Stock
Oct 29, 2026
- Sold on the retailer's site by a third-party seller.