An authentication system, comprising: an authentication board assembly disposed on a loading unit configured to be secured to a surgical stapling device, including: an authentication circuit board having a proximal end and a distal end; a contact assembly fixed to the proximal end of the authentication circuit board and extending proximally therefrom; and a chip fixed to the authentication circuit board in operable communication with the contact assembly; and an adapter board assembly disposed on a surgical stapling device, including: an adapter circuit board having an upper surface and a lower surface; at least one contact (55a, 55b) fixed to the lower surface of the adapter circuit board; and a spring disposed on the upper surface of the adapter circuit board; wherein the contact assembly of the authentication board assembly is configured to engage the at least one contact (55a,55b) of the adapter board assembly, and wherein the contact assembly of the authentication board assembly further comprises: a short contact arm having a first contact member orthogonally disposed and fixed to an upper portion of a proximal end of the short contact arm; a long contact arm having a second contact member orthogonally disposed and fixed to an upper portion of a proximal end of the long contact arm; and a solder tab orthogonally disposed and fixed to a lower portion of a distal end of at least one of the short contact arm or the long contact arm. an authentication board assembly disposed on a loading unit configured to be secured to a surgical stapling device, including: an authentication circuit board having a proximal end and a distal end; a contact assembly fixed to the proximal end of the authentication circuit board and extending proximally therefrom; and a chip fixed to the authentication circuit board in operable communication with the contact assembly; and an authentication circuit board having a proximal end and a distal end; a contact assembly fixed to the proximal end of the authentication circuit board and extending proximally therefrom; and a chip fixed to the authentication circuit board in operable communication with the contact assembly; and an adapter board assembly disposed on a surgical stapling device, including: an adapter circuit board having an upper surface and a lower surface; at least one contact (55a, 55b) fixed to the lower surface of the adapter circuit board; and a spring disposed on the upper surface of the adapter circuit board; an adapter circuit board having an upper surface and a lower surface; at least one contact (55a, 55b) fixed to the lower surface of the adapter circuit board; and a spring disposed on the upper surface of the adapter circuit board; wherein the contact assembly of the authentication board assembly is configured to engage the at least one contact (55a,55b) of the adapter board assembly, and wherein the contact assembly of the authentication board assembly further comprises: a short contact arm having a first contact member orthogonally disposed and fixed to an upper portion of a proximal end of the short contact arm; a long contact arm having a second contact member orthogonally disposed and fixed to an upper portion of a proximal end of the long contact arm; and a solder tab orthogonally disposed and fixed to a lower portion of a distal end of at least one of the short contact arm or the long contact arm. a short contact arm having a first contact member orthogonally disposed and fixed to an upper portion of a proximal end of the short contact arm; a long contact arm having a second contact member orthogonally disposed and fixed to an upper portion of a proximal end of the long contact arm; and a solder tab orthogonally disposed and fixed to a lower portion of a distal end of at least one of the short contact arm or the long contact arm.