I found this from nls
The two pictures of the player and cartridge on the cover of the Strategic 
Business Plan 2006  were sent to members of the NLS National Advisory 
Committee on Audio Equipment after its September meeting with encouragement 
to disseminate them. As a result, William Graczyk of the Wisconsin regional 
library and committee member posted a detailed
description on a web site for blind readers, for the benefit of patrons who 
can not
see the photographic images. The following description updates his.
The player pictured is the basic model. The player is about 6 by 9 by 2 
inches, in
comparison with the cassette book machine (CBM), which is 9 by 11 by 3 
inches, or
108 cu. in. compared to 300 cu. in. Weight of the digital talking book 
player is
slightly over two pounds compared to the C-1's seven pounds. The body of the 
player
is dark charcoal grey to create maximum visual contrast between the 
background of
the case and the colors of the buttons.
The Rewind, Play and Fast Forward controls are centered and are close to the 
front
edge of the player: The square green Play button controls stopping and 
starting playback
of the book. The white triangular Rewind and Fast Forward buttons to the 
left and
right of the Play button move through the book more quickly the more times 
they are
pressed. Each key press gives audible feedback about how far ahead or back 
the user
is moving. Just behind the navigation buttons are the Power, Sleep and 
Volume buttons:
The round red Power button turns the player on and off. It is close to the 
left edge
of the player. The white Sleep button, shaped like a crescent moon, will 
turn the
player off thirty minutes after it is pressed. It is centered, just behind 
the Play
button. The yellow Volume controls are shaped like arrowheads pointing up 
and down.
They are close to the right edge of the player. Just behind these controls 
is a raised
line running from one side of the player to the other. This line divides the 
six
most frequently used controls located towards the front of the player from 
the Tone
and Speed controls which are located behind the tactile raised line and on 
either
side of the round speaker.
Both Tone and Speed are shaped like the Volume buttons, up and down 
arrowheads, and
are along its narrow axis. The Tone buttons are close to the left edge of 
the player;
the Speed button is close to the right edge. The Volume, Tone, and Speed 
controls
all announce each press of the button, e.g. "tone lower," "tone higher," 
"tone middle,"
with similar announcements for the other controls. The Speed control changes 
the
speech from 50% to 300% of normal, with no change in pitch.
The white band along the front edge of the player is a pull-out handle, 
similar to
the one on the CBM. Above the handle is the opening for the digital talking 
book
cartridge. On the right side of the player are the headphone jack, with a 
brightly-colored
surround for easy location (color is yet to be determined). Next to the jack 
is a
USB port for repair personnel to use for diagnostic information.
On the back side of the machine, as on the back of the CBM, is a compartment 
for
storing the power cord. On the bottom of the player are four rubber feet, 
the door
to the battery compartment, and two inset bars for attaching a carrying 
strap. There
is also plenty of room for identification labels.
The advanced model, which is also at the nearly-final prototype stage, is 
exactly
the same size but has a second row of controls between the Power, Sleep and 
Volume
controls and the speaker. The advanced controls are for setting and 
retrieving bookmarks
and for navigating through the structured levels of a NISO book.
The cartridge shipping container is slightly longer and wider than a green 
cassette
box but only half the thickness. The color will not necessarily be blue, 
despite
the photo.
The cartridge itself is the size of a cassette, but with a more complex 
shape. The
end of the cartridge with the round finger hole is slightly thicker than a 
cassette,
with square sides, but is also beveled, so that when that end of the 
cartridge is
pressed down on a flat surface in front of the player, the other end of the 
cartridge,
with the USB connector, tilts up and can slide smoothly into the player. The 
end
of the cartridge with the USB connector is also beveled, but with the bevels 
slanting
toward the center of the cartridge, so that there is only one way it will 
fit into
the player.

----- Original Message ----- 
From: "Lou Kolb" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, March 23, 2009 1:22 PM
Subject: Re: can't remember


> You can also play a book through the USB port.  At least, you could when I
> used one for a couple of months a year and a half ago.  Lou
> ----- Original Message ----- 
> From: "Russ Kiehne" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, March 23, 2009 9:46 AM
> Subject: Re: can't remember
>
>
>> It's my understanding the USB port is for repair personnel to use for
>> diagnostic information.
>> You download the book from nls, connect the cartridge to your computer 
>> and
>> transfer the book to it.
>> ----- Original Message ----- 
>> From: "Lou Kolb" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Sunday, March 22, 2009 1:52 PM
>> Subject: Re: can't remember
>>
>>
>>> They will have a USB port into which you can plug a thumb drive and 
>>> there
>>> will be third-party cartridges available on to which you can load a book
>>> but
>>> the players will only handle one book at a time.  Lou
>