ELUTENG Dual 40mm USB Fan with 3 Speeds Adjustable 5V PC Fan Max 5500RPM

Whisper quiet, and surprisingly good airflow for such small fans! I am using them on the low setting to cool a small audio amplifier. Works extremely well. The description doesn’t show it very well, but there is plenty of cable to work with.

These teeny tiny fans are exactly what I needed to cool of my dock. Remember to read the size before buying case they really are teeny. They do have 3 speeds and I have them on high. It's not a lot of force but the constant wind cools off the dock very well. I also use it on my son's hand-held gaming PC, which can get a bit warm. The price was pretty affordable so I'm pretty happy with them!

Smaller than I imagined. Very little airflow on hi. Used it to blow on cpu heat sink on smart tv. Did the trick no more constant rebooting

I love these little fans! I installed them in my cat's litter box area to help exhaust odors, and they've worked great. They move plenty of air while staying surprisingly quiet, which is important because they don't scare my cats at all. The three-speed settings are a nice feature, they're easy to power with USB, and they've been running reliably. If you're looking for a small, quiet fan for a pet area, electronics cabinet, or other ventilation project, I highly recommend these.

They were good they function well just didn’t work out for what I was hoping for what I was using them for

I bought these for our gecko's small enclose to help regulate humidity. The 3-speed setting is helpful and it's near silent at all speeds. It's a pretty specific use case, but the size and quality are perfect for it.

a bit smaller than i was thinking but they work to move air very quiet and easy to hook up

Added these to my thermoelectric cigar humidor to circulate air. Seems good , will see if they hold up and for how long.

Low noise . 3 speeds that seem to actually be different. Seem well built and are fairly powerful.

Small, but relatively quiet. Do the job, giving enough airflow for small heatsinks.

I bought these fans to add airflow through my chameleon's mesh terrarium, they work well and are very quiet, I just wish they moved a little more air than they do. In any case, they definitely do the job I bought them for, so 4/5 from me!

Very convenient USB fans. I have them set up in a push-pull configuration in my little server shelf to keep things nice and cool. There is a slight rattle to one of the fans but I don't notice it over the sound of the rest of my devices.

音は静かだが風量はそこまで多くない。コードが短い(特にスイッチからファン本体までのコードが短い)ので取り回しが悪い。耐久性は分からないが、コードと本体の接続部分がやや不安な印象。