N95 8GB connect to a USB Device

Question

As the title says, is it possible to connect the N95 8GB to a external USB Device like a USB Hard Drive so that files from the hard drive can be viewed on the N95.
I would suppose you would need to use additional software for this task.
Any comments.

Answer 1

Power (+5V) is not the problem as long as the usb device has an external power supply. Most (if not all) nokia phones use 3.6 - 3.7 V battery, but, despite that, nokia phones could produce 5V from 3.7V battery with special hardware. Else, there could be a limitation of simultaneously using the phone charger (that provides 5V to the phone) when connecting a usb device to nokia phone. So, power is not the problem.
Lets look to signals (D+ and D-). According to http://en.wikipedia.org/wiki/Usb , Transmitted signal levels are 0.0 – 0.3 V for low and 2.8 – 3.6 V for high in full speed (FS) and low speed (LS) modes, and −10 – 10 mV for low and 360 – 440 mV for high in hi-speed (HS) mode. So 3.7V battery is capable of USB signaling, too.
Additionally, most (if not all) ARM processors that are inside Nokia phones, have one USB client port and at least one USB Host port (USB 1.1 or USB 2.0). For examble, old Nokia 7610 is equiped with ARM processor OMAP 1510, that has one client USB port and one USB 1.1 HOST port. (Mention that 7610 does not have usb port. It has pop-port that includes required 4 USB signals: VBUS, Ground, D+ and D-). See http://en.wikipedia.org/wiki/Pop-port .
What is the problem: It's just, Nokia manufacturer does not make use of ARM processor's USB Host port contacts. Also there is not an addtional micro USB port (more space required), and of course there is not software supporting USB Host capability.
Consider, also, that adding USB Host capability to small sized Nokia super phones, that have not big enough battery capacity, then, the battery would be exhausted soon. That's not good for marketing.
So, if you want to add USB Host port to Nokia phone, then:
1) Locate processor and USB Host port contacts ( if you are able to do it, because of FBGA processor type)
2) Provide 5V to USB device.
3) Write some code and install it in Nokia phone.
---  It doesn't worth it. Too much trouble !!!  ----
One other method, would be a SDIO to USB Host Controller Card, connected to micro SD port of some Nokia phones. But, only CF Card to USB Host exists in the market for over 130$. SDIO to USB Host Hardware Development kit costs a lot and are big enough.
Can anyone build something using Maxim ICs MAX3420 or MAX3421E (USB Peripheral Controller with SPI Interface), and connect it to SD card slot supporting SDIO (SD uses SPI interface!!!) ????????????