Secure USB-B ports against unauthorised access and data theft via printers, scanners and network equipment. These devices are exposed daily to cyber threats through unsecured USB-B ports. These entry points create a dangerous opening for data theft and malware attacks that can cost companies millions.
Why blocking USB-B ports is essential
Unsecured USB-B ports give hackers direct access to sensitive business information without any resistance. Malicious actors install viruses and ransomware via these ports, bringing entire networks to a standstill within minutes. Every open port is an invitation to theft by both external attackers and internal staff.
Physical protection that always works
Software solutions fail as soon as updates go wrong, hackers bypass security measures or systems go offline. This USB-B Port Lock provides hardware-based protection that cannot be hacked and remains active 24/7, even when devices are switched off. Plug the blocker into the port and you are done: only system administrators with the key can gain access.
Immediate results for any organisation
Stop data theft before customer data, financial records and trade secrets disappear. Prevent costly downtime caused by malware infections that disable systems for days and halt production. Effortlessly comply with NIS2, ISO 27001 and GDPR requirements by demonstrating physical access control during audits.
Installation in three simple steps
Identify all vulnerable USB-B ports on printers, scanners, routers and other equipment. Firmly click the Smart Keeper USB-B Port Lock into the ports. No tools or technical expertise are required. The Lock Key Mini is not included by default and must be purchased separately. Store the Lock Key Mini in a secure location accessible only to authorised IT staff.
Technical specifications
- Connector type: USB-B
- Material: Robust plastic construction
- Compatibility: Universally applicable to all USB-B ports
- Installation: No software, power or configuration required
- Removal: Only possible with the Lock Key Mini, which must be purchased separately
Critical devices and sectors
Hospitals: prevent unauthorised tampering with medical scanners and other diagnostic equipment that process patient data via USB-B. Government Organisations: ensure that multifunction printers and document-processing systems with confidential or classified information are properly protected. In Industrial environments: industrial printers, barcode scanners and PCs on the production line are shielded to prevent sabotage. Banks and other financial Institutions: secure receipt printers, document scanners and network routers so that all endpoints within the organisation comply with GDPR requirements.
Stop data disasters before they start
Prevent losses of thousands of euros and reputational damage by installing this simple physical barrier today. With this port locker, you maintain far better control over all USB-B access points within your organisation.


