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SanDisk USB 3.0 Ultra 128GB vs. SanDisk USB 3.1 Ultra Fit 512GB + 6
Encryption
Yes
Yes
Yes
Yes
Yes
Password protected
Yes
Yes
Yes
Yes
Yes
Fingerprint readers
No
No
No
No
No
Windows Vista ReadyBoost
Yes
No
No
Yes
Other connectors
Type of USB connector
USB (Type A)
USB (Type A)
USB (Type A)
USB (Type A)
USB (Type A)
USB (Type A)
USB (Type A)
USB (Type A)
USB version
3 (Gen 1)
3 (Gen 1)
3 (Gen 1)
3 (Gen 1)
3 (Gen 1)
3 (Gen 1)
3 (Gen 1)
3 (Gen 1)
Available colours
Black, Grey, Blue, Red
Black
Black, Silver, Grey, Brown
Black, Silver, Grey, Blue, Pink
Black
Black, White, Silver, Grey
Black, Silver, Grey, Blue, Pink
Black, Silver, Red
Product weight
10 g
4.54 g
10 g
219 g
17 g
3.1 g
219 g
10 g
Features
Keychain holder
Keychain holder, Nano Design
Keychain holder
Keychain holder
Keychain holder, Nano Design
Keychain holder
Keychain holder
Retractable connector
Yes
No
Yes
No
No
Yes
Weather proof (moisture/dust)
No
Yes
No
Yes
No
No
Read speed
100 MB/s
130 MB/s
300 MB/s
150 MB/s
420 MB/s
300 MB/s
150 MB/s
130 MB/s
Write speed
40 MB/s
27.6 MB/s
80 MB/s
60 MB/s
380 MB/s
50 MB/s
60 MB/s
40 MB/s
Memory capacity
128 GB
512 GB
256 GB
128 GB
128 GB
128 GB
32 GB
256 GB
Price/GB
0.07 £/GB
0.1 £/GB
0.09 £/GB
0.11 £/GB
0.27 £/GB
0.16 £/GB
0.16 £/GB
0.1 £/GB
Material
Steel, Plastic
Aluminum
Aluminum
Steel, Plastic
Aluminum, Plastic
Aluminum, Steel, Plastic
Aluminum, Steel, Plastic
Plastic