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Incoming ASCII Code to USB Key Translation Table Used by the USB-331 and USB-335
Most Significant Hex Digit

 

 0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

0
   

Space

0

@

P

'

p

C/A/D
 

F1

Num
Lock

Num Enter

Insert

LFTWIN
      

1
   

!

1

A

Q

a

q

M LCNT

B LCNT

F2

Caps Lock

Num /

Home

RTWIN
 

2
   

"

2

B

R

b

r

M LSHF

B LSHF

F3

Scroll Lock

Num *

End

WINAPP
 

3
   

#

3

C

S

c

s

M LALT

B LALT

F4
 

Num 9

Page
Up
   

4
   

$

4

D

T

d

t

M RCNT

B RCNT

F5
 

Num 8

Page
Down
   

5
   

%

5

E

U

e

u

M RSHF

B RSHF

F6
 

Num 7

Up
Arrow
   

6
   

&

6

F

V

f

v

M RALT

 B RALT

 F7
 

Num 6

 Down
Arrow
   

7
   

`

7

G

W

g

w

 M
SCLK

 B
SCLK

F8
 

Num 5

Left
Arrow
   

8

BS
 

(

8

H

X

h

x

 M
LFTWIN

 B
LFTWIN

F9
 

Num 4

Right
Arrow
   

9

Tab
 

)

9

I

Y

i

y

 M
RTWIN

 B
RTWIN

F10
 

Num 3

Print
Screen
   

A
   

*

:

J

Z

j

z
   

F11
 

Num 2

Pause Break
   

B
 

Esc

+

;

K

[

k

{
   

F12
 

Num 1

Del 
   

C
   

,

<

L

\

l

|
       

Num 0
     

D

Enter
 

-

=

M

]

m

}
       

Num -
     

E
   

.

>

N

^

n

~
       

Num +
     

F
   

/

?

O

_

o
         

Num .
     

1. Blank Table entries indicate no output. 2. M - make code only (simulates "stuck" key); B - break code only (releases "stuck" key) 3. C/A/D - results in soft reset combination: Control/Alt/Delete. 4. LCNT/RCNT - left/right control keys; LSHF/RSHF - left/right shift keys; LALT/RALT - left/right Alt keys; NUM LK - Num Lock key; CAP LK - Caps Lock Key; SCROLL LK - Scroll Lock key. 5. NUM prefix denotes keys from NUM pad. 6. PRT SCR is Print Screen key. 7. LFTWIN, RTWIN, WINAPP are the Windows keys. 8. Keys are specified by US English keyboard keycap legends.

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