# Running Denon HD2500 off External Hard Drive
**URL:** https://community.enginedj.com/t/running-denon-hd2500-off-external-hard-drive/12233
**Category:** Misc
**Tags:** legacy
**Created:** [February 6, 2019, 1:58am UTC](https://community.enginedj.com/t/running-denon-hd2500-off-external-hard-drive/12233 "2019-02-06T01:58:49Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Kebab69man](https://community.enginedj.com/u/Kebab69man)
#### Post date: [February 6, 2019, 1:58am UTC](https://community.enginedj.com/t/running-denon-hd2500-off-external-hard-drive/12233/1 "2019-02-06T01:58:49Z")
Hi Guys,
For those of you still running the HD2500. I currently use a HC4500 as a primary controller for the laptop and a HD2500 off its internal HDD (running continously) just incase I have to reboot. I also carry a spare laptop with me.
Is it worth the hassle of setting up the HD2500 to run off an external HDD just incase I have total laptop failure? Plus the HD2500 will work as a laptop controller too.
From what I’ve read here, the HD2500 can handle up to 4 usb devices and a max of 1TB of data with no more than 1000 MP3’s per folder.
I’ve further read that a powered USB hub is required to run the HDD’s and keyboard.
Looks like a lot of messing about, with even more wires to prat around with. I know I may have answered my own question.
But is all this worth doing?
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### Author:  [@captmidnight](https://community.enginedj.com/u/captmidnight)
#### Post date: [August 15, 2020, 1:39pm UTC](https://community.enginedj.com/t/running-denon-hd2500-off-external-hard-drive/12233/2 "2020-08-15T13:39:59Z")
Honestly I run my HD2500 with an unpowered hub. I use powered WD mybook hard drives. If you use something like a USB powered drive you will need a powered hub as the USB port is not going to give sufficent power.