Network Modules for Catalyst 3850 Series    
C3850-NM-4-1G=    Cisco Catalyst 3850 4 x 1GE Network Module    $2,600
C3850-NM-2-10G=    Cisco Catalyst 3850 2 x 10GE Network Module    $13,000
C3850-NM-4-10G=    Cisco Catalyst 3850 4 x 10GE Network Module    $20,800
Redundant power supply for 3850    
PWR-C1-1100WAC=    1100W AC Config 1 Power Supply    $9,880
PWR-C1-350WAC=    350W AC Config 1 Power Supply    $3,380
PWR-C1-715WAC=    715W AC Config 1 Power Supply    $6,500
IOS  upgrade    
L-C3850-24-L-E    C3850-24 LAN Base to IP Services Electronic RTU License    $35,100
L-C3850-24-L-S    C3850-24 LAN Base to IP Base Electronic RTU License    $9,100
L-C3850-24-S-E    C3850-24 IP Base to IP Services Electronic RTU License    $26,000
L-C3850-48-L-E    C3850-48 LAN Base to IP Services Electronic RTU License    $70,200
L-C3850-48-L-S    C3850-48 LAN Base to IP Base Electronic RTU License    $18,200
L-C3850-48-S-E    C3850-48 IP Base to IP Services Electronic RTU License    $52,000

Wireless LAN Controller License  upgrade    
L-LIC-CTIOS-1A    AP adder license for IOS based Wireless LAN Controllers
(Add 1 AP control license) TOP Level : L-LIC-CT3850-UPG    $1,040
* please times the price by the AP qty that you want to upgrade    
Catalyst 3850 Series 10/100/1000 Switches (Layer 3) (Wireless LAN Controller function embeded)
*Remark:
1. 3850 only support 50 AP license per stack, e.g. if stack 9 x C3850 together, only 50AP license as maximum
2. C3850 only support direct attached APs, e.g. a 24 ports C3850 only support 24 X APs, 48 ports C3850 only support 48 X APs    　
Catalyst 3850 series default come with one 50cm StackWiseCable (STACK-T1-50CM)
Cisco StackWise Cables for the Catalyst 3850 Series    
STACK-T1-50CM=    50CM Type 1 Stacking Cable    $520
STACK-T1-1M=    1M Type 1 Stacking Cable    $1,040
STACK-T1-3M=    3M Type 1 Stacking Cable    $1,560