The rear has a tamper-evident CIS-labeled seal. The rear palte is marked "CIS | SECURE COMPUTING | DULLES, VIRGINIA, USA | WWW.CISSECURE.COM | DTD-8841-01". To the left are two RJ-45 ports. On the right are 3 RJ-11 ports (headset, AUX, and handset), and a round 4-pin power port, marked "DC48V".
On the bottom are two white labels: "NTSWG Approval # TSG-B-03-2016 | Class B Type Acceptance Speakerphone Enabled | Date of Manufacture: October 2017 | Serial # 147085 | CIS Secure Computing Model # DTD-8841-01 | Manual TSG". The second: "CIS Secure Computing | Model no. DTD-8841-01 | Serial no. 147095 | Date of Manufacture: October 2017", and in a second column, "Power | Volts 48 | Hertz 50/60 | Watts 12 | Amps 0.25", next to an unknown-format data matrix (similar to a QR code).